Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 49.
A156511
Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 49.
Terms
- a(0) =1a(1) =2a(2) =2a(3) =82a(4) =210a(5) =24604a(6) =157700a(7) =153363108a(8) =4197081428
External references
- oeis: A156511