Triangular numbers that are 1/7 of triangular numbers.
A077399
Triangular numbers that are 1/7 of triangular numbers.
Terms
- a(0) =0a(1) =3a(2) =15a(3) =780a(4) =3828a(5) =198135a(6) =972315a(7) =50325528a(8) =246964200a(9) =12782485995a(10) =62727934503
External references
- oeis: A077399