Numbers n such that n^2 + n(n+1) is an oblong number (A002378).
A220185
Numbers n such that n^2 + n(n+1) is an oblong number (A002378).
Terms
- a(0) =0a(1) =10a(2) =348a(3) =11830a(4) =401880a(5) =13652098a(6) =463769460a(7) =15754509550a(8) =535189555248
External references
- oeis: A220185