a(0) = 1; thereafter a(n) = n*Sum_{k=0..n-1} binomial(n,k) * a(k).

A367308

a(0) = 1; thereafter a(n) = n*Sum_{k=0..n-1} binomial(n,k) * a(k).

Terms

    a(0) =1a(1) =1a(2) =6a(3) =66a(4) =1220a(5) =34130a(6) =1346982a(7) =71335236a(8) =4883183496a(9) =419708936862

External references