a(n) = Sum_{k=0..n} binomial(n,k) * A000108(k) * k^k.

A349639

a(n) = Sum_{k=0..n} binomial(n,k) * A000108(k) * k^k.

Terms

    a(0) =1a(1) =2a(2) =11a(3) =163a(4) =4177a(5) =150606a(6) =7002679a(7) =399296682a(8) =26997867705

External references