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A146508 Number of n X n arrays of squares of integers with every (n-1)X(n-1) subblock summing to 18 and every element equal to at least one neighbor. 1
4, 116, 59082, 38462980, 22016885138 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Table of n, a(n) for n=3..7.

CROSSREFS

Sequence in context: A272158 A194535 A030255 * A096464 A285053 A264420

Adjacent sequences:  A146505 A146506 A146507 * A146509 A146510 A146511

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 14 2009

STATUS

approved

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Last modified November 28 13:47 EST 2021. Contains 349413 sequences. (Running on oeis4.)