1111646

Appears in sequences

• Expansion of e.g.f. exp(Sum_{k=1..3} (exp(k*x) - 1)).at n=6A355421
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f. exp(Sum_{j=1..k} (exp(j*x) - 1)).at n=51A355423