Squares (A000290) which are also centered triangular numbers (A005448).

A249483

Squares (A000290) which are also centered triangular numbers (A005448).

Terms

    a(0) =1a(1) =4a(2) =64a(3) =361a(4) =6241a(5) =35344a(6) =611524a(7) =3463321a(8) =59923081a(9) =339370084a(10) =5871850384a(11) =33254804881a(12) =575381414521

External references