Indices of square numbers which are also heptagonal.
A046196
Indices of square numbers which are also heptagonal.
Terms
- a(0) =1a(1) =9a(2) =77a(3) =1519a(4) =12987a(5) =111035a(6) =2190397a(7) =18727245a(8) =160112393a(9) =3158550955a(10) =27004674303a(11) =230881959671
External references
- oeis: A046196