1958058

Appears in sequences

• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = n! * Sum_{j=0..n} k^(n-j) * (n-j)^j/j!.at n=51A351761
• Expansion of e.g.f. 1/(1 - 3*x*exp(x)).at n=6A351763