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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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 11 2018
STATUS
approved

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)