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A146089
Number of n X n arrays of squares of integers summing to 4 with every element equal to at least one neighbor.
1
1, 32, 219, 698, 1657, 3336, 6023, 10054, 15813, 23732, 34291, 48018, 65489, 87328, 114207, 146846, 186013, 232524
OFFSET
2,2
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 14 2009
STATUS
approved