Sequences

392,541 sequences

a(n) = floor(n/2) + floor(n/3).A010761
a(n) = floor(n/2) + floor(n/3).
a(n) = floor(n/2) * floor(n/3).A010762
a(n) = floor(n/2) * floor(n/3).
a(n) = binomial(2n+1, n+1) - 1.A010763
a(n) = binomial(2n+1, n+1) - 1.
a(n) = floor(n/2) mod floor(n/3).A010764
a(n) = floor(n/2) mod floor(n/3).
a(n) = floor(n/2)^floor(n/3).A010765
a(n) = floor(n/2)^floor(n/3).
Triangle read by rows: row n gives the numbers floor(n/k), k = 1..n.A010766
Triangle read by rows: row n gives the numbers floor(n/k), k = 1..n.
Decimal expansion of 4th root of 2.A010767
Decimal expansion of 4th root of 2.
Decimal expansion of 6th root of 2.A010768
Decimal expansion of 6th root of 2.
Decimal expansion of 7th root of 2.A010769
Decimal expansion of 7th root of 2.
Decimal expansion of 8th root of 2.A010770
Decimal expansion of 8th root of 2.
Decimal expansion of 9th root of 2.A010771
Decimal expansion of 9th root of 2.
Decimal expansion of 10th root of 2.A010772
Decimal expansion of 10th root of 2.
Decimal expansion of 11th root of 2.A010773
Decimal expansion of 11th root of 2.
Decimal expansion of 12th root of 2.A010774
Decimal expansion of 12th root of 2.
Decimal expansion of 13th root of 2.A010775
Decimal expansion of 13th root of 2.
Decimal expansion of 14th root of 2.A010776
Decimal expansion of 14th root of 2.
Decimal expansion of 15th root of 2.A010777
Decimal expansion of 15th root of 2.
Decimal expansion of 16th root of 2.A010778
Decimal expansion of 16th root of 2.
Decimal expansion of 17th root of 2.A010779
Decimal expansion of 17th root of 2.
Decimal expansion of 18th root of 2.A010780
Decimal expansion of 18th root of 2.
Decimal expansion of 19th root of 2.A010781
Decimal expansion of 19th root of 2.
Decimal expansion of 20th root of 2.A010782
Decimal expansion of 20th root of 2.
Triangle of numbers floor(n/(n-k)).A010783
Triangle of numbers floor(n/(n-k)).
Numbers with distinct decimal digits.A010784
Numbers with distinct decimal digits.
Repdigit numbers, or numbers whose digits are all equal.A010785
Repdigit numbers, or numbers whose digits are all equal.
Floor-factorial numbers: a(n) = Product_{k=1..n} floor(n/k).A010786
Floor-factorial numbers: a(n) = Product_{k=1..n} floor(n/k).
Duplicate of A008933.A010787
Duplicate of A008933.
sin(log(cos(x)))=-1/2!*x^2-2/4!*x^4-1/6!*x^6+148/8!*x^8+...A010788
sin(log(cos(x)))=-1/2!*x^2-2/4!*x^4-1/6!*x^6+148/8!*x^8+...
Expansion of -arcsin(log(cos(x))) = (1/2!)*x^2 + (2/4!)*x^4 + (31/6!)*x^6 + (692/8!)*x^8 + ...A010789
Expansion of -arcsin(log(cos(x))) = (1/2!)*x^2 + (2/4!)*x^4 + (31/6!)*x^6 + (692/8!)*x^8 + ...
a(n) = n!*(n+1)!.A010790
a(n) = n!*(n+1)!.
a(n) = n!*(n+2)!/2.A010791
a(n) = n!*(n+2)!/2.
a(n) = n!*(n+3)! / 3!.A010792
a(n) = n!*(n+3)! / 3!.
a(n) = n!*(n+4)! / 4!.A010793
a(n) = n!*(n+4)! / 4!.
a(n) = n!*(n+5)!/5!.A010794
a(n) = n!*(n+5)!/5!.
a(n) = n!*(n+6)! / 6!.A010795
a(n) = n!*(n+6)! / 6!.
a(n) = n!*(n+1)!/2.A010796
a(n) = n!*(n+1)!/2.
a(n) = n! * (n+1)! * (n+2)! / (2! * 3!).A010797
a(n) = n! * (n+1)! * (n+2)! / (2! * 3!).
a(n) = n! * (n+1)! * (n+2)! * (n+3)! / (2! * 3! * 4!).A010798
a(n) = n! * (n+1)! * (n+2)! * (n+3)! / (2! * 3! * 4!).
a(n) = n!*(n+1)!*(n+2)!*(n+3)!*(n+4)! / ( 2!*3!*4!*5! ).A010799
a(n) = n!*(n+1)!*(n+2)!*(n+3)!*(n+4)! / ( 2!*3!*4!*5! ).
a(n) = n! * (n+1)! * (n+2)! * (n+3)! * (n+4)! * (n+5)! / (2! * 3! * 4! * 5! * 6!).A010800
a(n) = n! * (n+1)! * (n+2)! * (n+3)! * (n+4)! * (n+5)! / (2! * 3! * 4! * 5! * 6!).
13th powers: a(n) = n^13.A010801
13th powers: a(n) = n^13.
14th powers: a(n) = n^14.A010802
14th powers: a(n) = n^14.
15th powers: a(n) = n^15.A010803
15th powers: a(n) = n^15.
16th powers: a(n) = n^16.A010804
16th powers: a(n) = n^16.
17th powers: a(n) = n^17.A010805
17th powers: a(n) = n^17.
18th powers: a(n) = n^18.A010806
18th powers: a(n) = n^18.
19th powers: a(n) = n^19.A010807
19th powers: a(n) = n^19.
20th powers: a(n) = n^20.A010808
20th powers: a(n) = n^20.
21st powers: a(n) = n^21.A010809
21st powers: a(n) = n^21.
22nd powers: a(n) = n^22.A010810
22nd powers: a(n) = n^22.