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

A252770

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

Terms

    a(0) =148a(1) =9155a(2) =567444a(3) =35172355a(4) =2180118548a(5) =135132177603

External references