3659040

Appears in sequences

• Triangle T(n,k) of number of labeled directed multigraphs (with loops), without isolated vertices, with n arrows and k vertices (n = 1,2,.., k = 1..2*n).at n=40A120945
• The coefficients (times n!) of the expansion of the sum {k=1 to Inf.} of Sin(x^n).at n=10A176473
• Denominators of poly-Cauchy numbers of the second kind hat c_n^(2).at n=10A219247
• Expansion of e.g.f. Sum_{k>=1} sinh(x^k).at n=9A330254
• a(n) = Sum_{p|n, p prime} n!/(p!*(n/p)!).at n=11A352058
• Number of permutations of [n] such that the minimal element of each cycle is also its length.at n=15A364406