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A146514
Number of n X n arrays of squares of integers summing to 20 with every element equal to at least one neighbor.
1
4, 96, 16816, 4506134, 921762154, 339740101635, 36832745153541
OFFSET
2,1
CROSSREFS
Sequence in context: A027872 A308146 A203517 * A181335 A098695 A307934
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 14 2009
STATUS
approved