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A156464
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Number of n X n arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to 16.
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0
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1, 2, 2, 7, 19, 1430, 9131, 1559914, 17481322, 4701559354, 99812199364, 42194032310078
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OFFSET
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1,2
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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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