1224579

Appears in sequences

• Expansion of e.g.f. exp(Sum_{d|M} (exp(d*x)-1)/d), M=4.at n=7A141003
• Table by antidiagonals, T(n,k) is the number of partitions of {1..(nk)} that are invariant under a permutation consisting of n k-cycles.at n=62A162663