161792

Appears in sequences

• Expansion of e.g.f. arctan(sin(x)*sin(x)), even powers only.at n=4A012297
• Composites which use less than all of their digits in their prime factorization.at n=23A074211
• a(n) = 0^n/2 + 2^n*(n^2+n+2)/4.at n=12A087431
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 0), (1, -1, 1), (1, 1, -1), (1, 1, 0)}.at n=10A149211
• Triangle T(n, k) for the number of permutations of symmetric group S_n with an odd number of non-fixed point cycles, without k <= n particular fixed points.at n=46A374420