Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 8.

A156445

Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 8.

Terms

    a(0) =1a(1) =4a(2) =18a(3) =138a(4) =3910a(5) =446508a(6) =89959563a(7) =25250999564

External references