21065853

Appears in sequences

• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A381570.at n=53A381569
• G.f. A(x) satisfies A(x) = (1 + x*A(x*A(x)))^3.at n=8A381570