a(n) = n!^2 * [x^n] polylog(2,x)^3.

A370225

a(n) = n!^2 * [x^n] polylog(2,x)^3.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =36a(4) =432a(5) =7500a(6) =191700a(7) =6899592a(8) =334858944a(9) =21143500992

External references