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

A323217

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

Terms

    a(0) =1a(1) =3a(2) =25a(3) =413a(4) =10746a(5) =387607a(6) =17981769a(7) =1022586105a(8) =68964092542

External references