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A156424
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Number of 17X17 arrays of squares of integers, symmetric about the diagonal and under 90 degree rotation, with all rows summing to n.
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0
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1, 0, 0, 0, 66178, 0, 0, 0, 7777280, 0, 0, 0, 73938288, 0, 0, 0, 1262896895, 89959563, 0, 0, 5559809528, 0, 0, 0, 30866580416, 991288522, 0, 0
(list; graph; refs; listen; history; internal format)
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