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A146202
Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 7 and every element equal to at least one neighbor.
1
0, 6, 10678, 169232, 895970, 3151504, 8793698, 21026206, 44936970, 88129194, 161444970, 279781318, 462998626, 736921490, 1134431954, 1696655150, 2474237338
OFFSET
3,2
CROSSREFS
Sequence in context: A102979 A069942 A261823 * A227889 A242676 A145720
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 14 2009
STATUS
approved