Number of 16 X 16 arrays of squares of integers, symmetric under 90-degree rotation, with all rows summing to n.

A156422

Number of 16 X 16 arrays of squares of integers, symmetric under 90-degree rotation, with all rows summing to n.

Terms

    a(0) =1a(1) =1680a(2) =1756860a(3) =449345680a(4) =33899743010a(5) =896812758240

External references