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URL: https://oeis.org/A146508

⇱ A146508 - OEIS

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A146508
Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 18 and every element equal to at least one neighbor.
1
4, 116, 59082, 38462980, 22016885138
OFFSET
3,1
CROSSREFS
Sequence in context: A272158 A194535 A030255 * A394271 A374676 A365450
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 14 2009
STATUS
approved