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A146513
Number of n X n arrays of squares of integers summing to 19 with every element equal to at least one neighbor.
1
0, 60, 11108, 3713772, 614556476, 198832564524, 14492630383404
OFFSET
2,2
CROSSREFS
Sequence in context: A001525 A377667 A309996 * A269883 A251991 A145411
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 14 2009
STATUS
approved