Sequences
392,541 sequences
- Number of 9's when n is written in base b for 2<=b<=n+1.A033111
Number of 9's when n is written in base b for 2<=b<=n+1.
- Number of 9's when k is written in base b for all b and k satisfying 2<=b<=n+1, 1<=k<=n.A033112
Number of 9's when k is written in base b for all b and k satisfying 2<=b<=n+1, 1<=k<=n.
- Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.A033113
Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.
- Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.A033114
Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.
- Base-5 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.A033115
Base-5 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.
- Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.A033116
Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.
- Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.A033117
Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.
- Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.A033118
Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.
- Base-9 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.A033119
Base-9 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.
- Base-2 digits of a(n) are, in order, the first n terms of the periodic sequence with initial period 1,0,1.A033120
Base-2 digits of a(n) are, in order, the first n terms of the periodic sequence with initial period 1,0,1.
- Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.A033121
Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.
- Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.A033122
Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.
- Base-5 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.A033123
Base-5 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.
- Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.A033124
Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.
- Base-7 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.A033125
Base-7 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.
- Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.A033126
Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.
- Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.A033127
Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.
- Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,0,1.A033128
Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,0,1.
- Base-2 digits are, in order, the first n terms of the periodic sequence with initial period [1,1,0].A033129
Base-2 digits are, in order, the first n terms of the periodic sequence with initial period [1,1,0].
- Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.A033130
Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.
- Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.A033131
Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.
- Base-5 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.A033132
Base-5 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.
- Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.A033133
Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.
- Base-7 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.A033134
Base-7 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.
- Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.A033135
Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.
- Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.A033136
Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,0.
- Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,1,0.A033137
Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,1,0.
- a(n) = floor(2^(n+2)/7).A033138
a(n) = floor(2^(n+2)/7).
- Base 3 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.A033139
Base 3 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.
- Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.A033140
Base-4 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.
- Base-5 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.A033141
Base-5 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.
- Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.A033142
Base-6 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.
- Base-7 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.A033143
Base-7 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.
- Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.A033144
Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.
- Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.A033145
Base 9 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,0.
- Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,0,0.A033146
Decimal expansion of a(n) is given by the first n terms of the periodic sequence with initial period 1,0,0.
- Numbers k such that the decimal expansion of k! begins with k.A033147
Numbers k such that the decimal expansion of k! begins with k.
- Number of rotationally symmetric solutions for queens on n X n board.A033148
Number of rotationally symmetric solutions for queens on n X n board.
- Position of first occurrence of n in the continued fraction for the Euler-Mascheroni constant (gamma).A033149
Position of first occurrence of n in the continued fraction for the Euler-Mascheroni constant (gamma).
- Decimal expansion of Niven's constant.A033150
Decimal expansion of Niven's constant.
- Continued fraction for Niven's constant.A033151
Continued fraction for Niven's constant.
- Position of first occurrence of n in the continued fraction for Niven's constant.A033152
Position of first occurrence of n in the continued fraction for Niven's constant.
- Incrementally largest terms in the continued fraction for Niven's constant.A033153
Incrementally largest terms in the continued fraction for Niven's constant.
- Position of incrementally largest terms in continued fraction for Niven's constant.A033154
Position of incrementally largest terms in continued fraction for Niven's constant.
- Configurations of linear chains for a square lattice.A033155
Configurations of linear chains for a square lattice.
- a(1) = 1; for m >= 2, a(n) = a(n-1) + floor(a(n-1)/(n-1)) + 2.A033156
a(1) = 1; for m >= 2, a(n) = a(n-1) + floor(a(n-1)/(n-1)) + 2.
- Begins with (1, 4); avoids 3-term arithmetic progressions.A033157
Begins with (1, 4); avoids 3-term arithmetic progressions.
- Begins with (1, 5); avoids 3-term arithmetic progressions.A033158
Begins with (1, 5); avoids 3-term arithmetic progressions.
- Begins with (2, 3); avoids 3-term arithmetic progressions.A033159
Begins with (2, 3); avoids 3-term arithmetic progressions.
- Begins with (2, 4); avoids 3-term arithmetic progressions.A033160
Begins with (2, 4); avoids 3-term arithmetic progressions.