Indices of centered decagonal numbers which are also decagonal numbers.

A133273

Indices of centered decagonal numbers which are also decagonal numbers.

Terms

    a(0) =1a(1) =10a(2) =171a(3) =3060a(4) =54901a(5) =985150a(6) =17677791a(7) =317215080a(8) =5692193641a(9) =102142270450

External references