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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 (list; graph; refs; listen; history; text; internal format)
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 August 14 04:03 EDT 2020. Contains 336477 sequences. (Running on oeis4.)