68615

Appears in sequences

• Square array A(n,k), n >= 0, k >= 1, read by antidiagonals downwards, where column k is the expansion of e.g.f. exp(-Sum_{j=1..k} x^j).at n=75A334561
• E.g.f.: exp(-(x + x^2 + x^3)).at n=9A334562