1989120

Appears in sequences

• Triangle, read by rows, of Stirling numbers of second kind, S2(n,k), multiplied by k^k, for n >= 1, 1<=k<=n.at n=39A105197
• a(n) = 2^n*(4^n-3^(n+1)+3*2^n-1)/6.at n=8A228700