Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 10.

A156451

Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 10.

Terms

    a(0) =2a(1) =6a(2) =60a(3) =972a(4) =56610a(5) =4465916a(6) =541808498a(7) =101930271184

External references