Indices of triangular numbers (A000217) that are also centered 10-gonal numbers (A062786).

A280111

Indices of triangular numbers (A000217) that are also centered 10-gonal numbers (A062786).

Terms

    a(0) =1a(1) =58a(2) =2221a(3) =84358a(4) =3203401a(5) =121644898a(6) =4619302741a(7) =175411859278

External references