a(n) = hypergeometric([-n - 1, n + 2], [-n - 2], n).

A323208

a(n) = hypergeometric([-n - 1, n + 2], [-n - 2], n).

Terms

    a(0) =1a(1) =5a(2) =67a(3) =1606a(4) =55797a(5) =2537781a(6) =142648495a(7) =9549411950a(8) =741894295369

External references