a(n) = Sum_{k=0..n} k^(2*k) * Stirling1(n,k).

A351182

a(n) = Sum_{k=0..n} k^(2*k) * Stirling1(n,k).

Terms

    a(0) =1a(1) =1a(2) =15a(3) =683a(4) =61332a(5) =9135004a(6) =2035708760a(7) =634172615600

External references