Indices of centered pentagonal numbers (A005891) which are also centered octagonal numbers (A016754).

A253410

Indices of centered pentagonal numbers (A005891) which are also centered octagonal numbers (A016754).

Terms

    a(0) =1a(1) =96a(2) =817a(3) =137712a(4) =1177393a(5) =198579888a(6) =1697799169a(7) =286352060064

External references