248870

Appears in sequences

• Number of directed site animals on hexagonal lattice.at n=19A006861
• Consider the family of multigraphs enriched by the species of linear order. Sequence gives the triangle read by rows giving coefficients of polynomials arising from enumeration of those multigraphs on n edges, arcs and loops.at n=24A098288
• a(n) = n! * [x^n] 1/(1 - n*log(1 + x)).at n=5A317172
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f. 1/(1 - k*log(1 + x)).at n=60A320080
• Expansion of e.g.f. 1 / (1 - 5 * log(1 + x)).at n=5A365604