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A146201
Number of n X n arrays of squares of integers summing to 7 with every element equal to at least one neighbor.
1
0, 12, 1640, 23650, 129116, 457330, 1265468, 2979098, 6251260, 12030146, 21635420, 36843178, 59979548, 94022930, 142714876, 210679610, 303552188, 428115298, 592444700, 806063306
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OFFSET
2,2
LINKS
Table of n, a(n) for n=2..21.
CROSSREFS
Sequence in context:
A271435
A271436
A034280
*
A009120
A078928
A202968
Adjacent sequences:
A146198
A146199
A146200
*
A146202
A146203
A146204
KEYWORD
nonn
AUTHOR
R. H. Hardin
Apr 14 2009
STATUS
approved
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Last modified April 18 11:17 EDT 2024. Contains 371779 sequences. (Running on oeis4.)