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A156447
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Number of n X n arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 8.
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0
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1, 0, 2, 2, 24, 60, 1483, 10236, 175765, 2771020, 133072650, 2511725250, 142353126510, 4354347220860, 366766557522330, 16657062087640520
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OFFSET
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2,3
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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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