a(n) = (A013969(n) - A037946(n))/77683.

A281956

a(n) = (A013969(n) - A037946(n))/77683.

Terms

    a(0) =0a(1) =27a(2) =134656a(3) =56615355a(4) =6138243072a(5) =282390755580

External references