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A302669 Number of nX7 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
8, 1934, 15569, 251254, 3204956, 46360666, 637088915, 8880747825, 123521424862, 1717557375519, 23910961429217, 332517383714540, 4627380566545690, 64369973050145418, 895641924918067374, 12460311385203779872 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A302670.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=5

..0..0..0..1..0..0..0. .0..1..1..1..1..1..0. .0..0..0..1..0..0..0

..0..1..1..0..1..1..0. .0..0..0..1..0..0..1. .0..1..1..1..0..1..1

..1..0..1..1..1..0..0. .1..1..1..1..0..1..1. .0..0..1..0..0..1..1

..0..0..1..0..1..1..0. .0..0..1..0..0..0..1. .0..0..1..0..1..1..0

..0..0..0..1..0..0..0. .0..0..0..1..1..1..0. .0..0..1..1..0..0..0

CROSSREFS

Cf. A302670.

Sequence in context: A298652 A299606 A302223 * A302471 A303253 A076955

Adjacent sequences:  A302666 A302667 A302668 * A302670 A302671 A302672

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 11 2018

STATUS

approved

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Last modified August 18 13:09 EDT 2022. Contains 356212 sequences. (Running on oeis4.)