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

A252769

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

Terms

    a(0) =94a(1) =5908a(2) =366282a(3) =22703656a(4) =1407260470a(5) =87227445564

External references