a(n) = Sum_{k = 0..n} E1(n, k)*k^2, where E1 are the Eulerian numbers A173018.

A344054

a(n) = Sum_{k = 0..n} E1(n, k)*k^2, where E1 are the Eulerian numbers A173018.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =8a(4) =64a(5) =540a(6) =4920a(7) =48720a(8) =524160a(9) =6108480a(10) =76809600a(11) =1037836800a(12) =15008716800a(13) =231437606400

External references