2122496

Appears in sequences

• Expansion of e.g.f. (1-2*x)^(-x).at n=8A053491
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = (-1)^n * n! * Sum_{j=0..floor(n/2)} k^(n-j) * Stirling1(n-j,j)/(n-j)!.at n=63A362837