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A278013 Number of nX7 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero. 1
0, 31808, 23376048, 25289030636, 25411730935962, 25821185682305524, 26189441962786135952, 26570542390954444938330, 26955958647713837678415162, 27347162598888601529381736910, 27744012208691795925340321755540 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A278014.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..47

EXAMPLE

Some solutions for n=2

..0..2..0..1..0..1..0. .0..1..2..0..1..0..0. .0..1..2..0..0..1..2

..1..2..1..2..1..2..0. .2..2..0..1..2..2..1. .2..0..2..1..0..2..0

CROSSREFS

Cf. A278014.

Sequence in context: A252034 A284519 A183704 * A140939 A237165 A134124

Adjacent sequences:  A278010 A278011 A278012 * A278014 A278015 A278016

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 08 2016

STATUS

approved

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Last modified January 22 09:16 EST 2021. Contains 340360 sequences. (Running on oeis4.)