Triangular numbers (A000217) that are the sum of seven consecutive triangular numbers.
A257711
Triangular numbers (A000217) that are the sum of seven consecutive triangular numbers.
Terms
- a(0) =210a(1) =3486a(2) =51681a(3) =883785a(4) =13125126a(5) =224476266a(6) =3333728685a(7) =57016086141a(8) =846753959226
External references
- oeis: A257711