Indices of 10-gonal numbers (A001107) that are also centered 10-gonal numbers (A062786).

A280070

Indices of 10-gonal numbers (A001107) that are also centered 10-gonal numbers (A062786).

Terms

    a(0) =1a(1) =11a(2) =191a(3) =3421a(4) =61381a(5) =1101431a(6) =19764371a(7) =354657241a(8) =6364065961a(9) =114198530051

External references