471750

Appears in sequences

• Expansion of e.g.f.: exp(exp(2*x) - 2*exp(x) + 1).at n=9A052859
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = Sum_{j=0..n} (k*j)!* Stirling2(n,k*j)/j!.at n=75A357869