Obverse convolution (n)**(n(n+1)/2); see Comments.

A374892

Obverse convolution (n)**(n(n+1)/2); see Comments.

Terms

    a(0) =0a(1) =1a(2) =12a(3) =216a(4) =5600a(5) =198000a(6) =9144576a(7) =533653120a(8) =38339288064

External references