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A146497
Number of nXn arrays of squares of integers with every (n-1)X(n-1) subblock summing to 13 and every element equal to at least one neighbor.
+0
2
0, 20, 17226, 8194791, 1995724092, 51267367432
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.
AT&T Labs Research
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