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Search: id:A159408
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| A159408 |
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Number of nXn arrays of squares of integers with every (n-1)X(n-1) subblock summing to 21 |
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+0 1
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| 80, 81970, 198598120, 364613564592, 491411402965408, 433784038380001756, 230474677737192144368, 70203649179688320074704, 12227440515845132316709008, 1273365210975360016227907628
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