Integers that are simultaneously triangular (A000217) and decagonal (A001107).

A133216

Integers that are simultaneously triangular (A000217) and decagonal (A001107).

Terms

    a(0) =0a(1) =1a(2) =10a(3) =1540a(4) =11935a(5) =1777555a(6) =13773376a(7) =2051297326a(8) =15894464365

External references