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Search: id:A156447
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| A156447 |
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Number of nXn arrays of squares of integers, symmetric under 90 degree rotation, with all rows summing to 8. |
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1
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| 1, 0, 2, 2, 24, 60, 1483, 10236, 175765, 2771020, 133072650, 2511725250, 142353126510, 4354347220860, 366766557522330, 16657062087640520
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