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A146299 Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 8 and every element equal to at least one neighbor. 1
8, 18, 107798, 6685156, 62777794, 313834602, 1129602808, 3313914698, 8438118356, 19340801916 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

LINKS

Table of n, a(n) for n=4..13.

CROSSREFS

Sequence in context: A177367 A138492 A022512 * A081968 A076096 A222636

Adjacent sequences: A146296 A146297 A146298 * A146300 A146301 A146302

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 14 2009

STATUS

approved

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Last modified December 5 02:30 EST 2022. Contains 358572 sequences. (Running on oeis4.)