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A146200 Number of n X n arrays of squares of integers with every (n-3)X(n-3) subblock summing to 6 and every element equal to at least one neighbor. 1
0, 168, 107441, 902774, 3692732, 11295174, 28865676, 65031988, 133191360, 253050012, 452373900, 768956436, 1252803248, 1968533980 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,2

LINKS

Table of n, a(n) for n=5..18.

CROSSREFS

Sequence in context: A275460 A275456 A185404 * A159394 A008699 A223125

Adjacent sequences:  A146197 A146198 A146199 * A146201 A146202 A146203

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 14 2009

STATUS

approved

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Last modified September 22 06:08 EDT 2020. Contains 337289 sequences. (Running on oeis4.)