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

A375050

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

Terms

    a(0) =0a(1) =1a(2) =18a(3) =576a(4) =29400a(5) =2205225a(6) =228953088a(7) =31473598464

External references