Indices of triangular numbers which are also octagonal.
A046182
Indices of triangular numbers which are also octagonal.
Terms
- a(0) =1a(1) =6a(2) =153a(3) =638a(4) =15041a(5) =62566a(6) =1473913a(7) =6130878a(8) =144428481a(9) =600763526a(10) =14152517273a(11) =58868694718
External references
- oeis: A046182