Indices of centered triangular numbers (A005448) which are also hexagonal numbers (A000384).

A254284

Indices of centered triangular numbers (A005448) which are also hexagonal numbers (A000384).

Terms

    a(0) =1a(1) =36a(2) =133a(3) =6888a(4) =25705a(5) =1336140a(6) =4986541a(7) =259204176a(8) =967363153a(9) =50284273908a(10) =187663465045

External references