Indices of centered heptagonal numbers (A069099) which are also centered square numbers (A001844).

A253460

Indices of centered heptagonal numbers (A069099) which are also centered square numbers (A001844).

Terms

    a(0) =1a(1) =16a(2) =112a(3) =3937a(4) =28321a(5) =999856a(6) =7193296a(7) =253959361a(8) =1827068737a(9) =64504677712a(10) =464068265776

External references