Squares (A000290) which are also centered pentagonal numbers (A005891).

A254333

Squares (A000290) which are also centered pentagonal numbers (A005891).

Terms

    a(0) =1a(1) =16a(2) =1156a(3) =22801a(4) =1666681a(5) =32878756a(6) =2403352576a(7) =47411143081

External references