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A156422
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Number of 16 X 16 arrays of squares of integers, symmetric under 90-degree rotation, with all rows summing to n.
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0
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1, 1680, 1756860, 449345680, 33899743010, 896812758240, 10075020851140, 65214945341280, 366766557522330, 2033591738777760, 9808527088125024, 42048089482202384
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OFFSET
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0,2
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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