Numbers n such that the sum of the hexagonal numbers X(n), X(n+1), X(n+2) and X(n+3) is equal to the heptagonal number H(m) for some m.

A252630

Numbers n such that the sum of the hexagonal numbers X(n), X(n+1), X(n+2) and X(n+3) is equal to the heptagonal number H(m) for some m.

Terms

    a(0) =50a(1) =16503a(2) =5314316a(3) =1711193649a(4) =550999041062

External references