Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 5.
A156437
Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 5.
Terms
- a(0) =2a(1) =6a(2) =42a(3) =291a(4) =2962a(5) =44124a(6) =2078160a(7) =253938600a(8) =45965640312
External references
- oeis: A156437