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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
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OFFSET
2,1
LINKS
Table of n, a(n) for n=2..8.
CROSSREFS
Sequence in context:
A027872
A308146
A203517
*
A181335
A098695
A307934
Adjacent sequences:
A146511
A146512
A146513
*
A146515
A146516
A146517
KEYWORD
nonn
AUTHOR
R. H. Hardin
Apr 14 2009
STATUS
approved
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Last modified April 19 10:31 EDT 2024. Contains 371791 sequences. (Running on oeis4.)