Numbers n such that the sum of the heptagonal numbers H(n), H(n+1) and H(n+2) is equal to the sum of three consecutive squares.

A251769

Numbers n such that the sum of the heptagonal numbers H(n), H(n+1) and H(n+2) is equal to the sum of three consecutive squares.

Terms

    a(0) =17a(1) =239a(2) =25529a(3) =345647a(4) =36813809a(5) =498423743a(6) =53085488057a(7) =718726692767

External references