Number of n X n arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 24.
A156481
Number of n X n arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 24.
Terms
- a(0) =2a(1) =0a(2) =31a(3) =210a(4) =36876a(5) =568284a(6) =46154300a(7) =2932212900
External references
- oeis: A156481