%I #5 Oct 27 2019 18:19:21

%S 1,1680,1756860,449345680,33899743010,896812758240,10075020851140,

%T 65214945341280,366766557522330,2033591738777760,9808527088125024,

%U 42048089482202384

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

%K nonn

%O 0,2

%A _R. H. Hardin_, Feb 09 2009