Numbers n such that n^2 + (n+1)^2 is equal to the sum of the hexagonal numbers H(m) and H(m+1) for some m.
A251867
Numbers n such that n^2 + (n+1)^2 is equal to the sum of the hexagonal numbers H(m) and H(m+1) for some m.
Terms
- a(0) =0a(1) =14a(2) =492a(3) =16730a(4) =568344a(5) =19306982a(6) =655869060a(7) =22280241074a(8) =756872327472
External references
- oeis: A251867