22143
domain: N
Appears in sequences
- Numbers whose set of base-9 digits is {3,4}.at n=30A032833
- Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,0.at n=9A033113
- Numbers whose base-3 representation has exactly 10 runs.at n=0A043590
- Numbers n such that number of runs in the base 3 representation of n is congruent to 1 mod 9.at n=18A043807
- Numbers n such that number of runs in the base 3 representation of n is congruent to 0 mod 10.at n=0A043815
- Numbers that are repdigits in base 9.at n=35A048334
- Numbers k such that 193*2^k-1 is prime.at n=11A050848
- a(n) is the least k in A002977 with a gap of n. Also n + a(n) is the least k in A007448 which is repeated n times.at n=9A058361
- Number of chains in the power set lattice of an (n+3)-element set X_(n+3) of specification n^1 2^1 1, that is, n identical objects of one kind, 2 identical objects of another kind and one other kind. It is the same as the number of fuzzy subsets X_(n+3).at n=5A107953
- Row 6 of rectangular table A124460.at n=6A124466
- Main diagonal of rectangular table A124460.at n=6A124467
- a(0)=3; a(n) = n^2 + a(n-1) for n>0.at n=40A153057
- Numbers n with property that n^2 starts and ends with 49.at n=5A159815
- Number of 0..n arrays of length 5 with each element differing from at least one neighbor by something other than 1, starting with 0.at n=11A221543
- Number of nX7 0..1 arrays with every element equal to 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.at n=8A298166
- Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.at n=9A299557
- Numbers k such that the largest prime divisor of k^4+1 is less than k.at n=24A309562
- Number of integer partitions of n whose LCM is less than n.at n=48A327781
- Numbers k such that k and k+1 are both hoax numbers (A019506).at n=35A329935
- Square array A(n,k) = A341526(A246278(n,k)), read by falling antidiagonals; Numerators of the columnwise first quotients of A341605/A341606.at n=19A341626