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A146203
Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 7 and every element equal to at least one neighbor.
1
0, 18, 79648, 1568158, 9251144, 34765154, 101461384, 250731864, 549801520, 1100971428, 2052324440, 3609891704, 6051280064
OFFSET
4,2
CROSSREFS
Sequence in context: A159445 A146548 A051591 * A192081 A290177 A259364
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 14 2009
STATUS
approved