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A207692 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 1 vertically 1
40, 1600, 1296, 5856, 18564, 50096, 145200, 453420, 1403184, 4038800, 12177100, 36992544, 110036104, 332138592, 989787144, 2977771420, 8964400760, 26737629576, 80548970652, 241336844800, 723444785800, 2175007306820 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A207693

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A218742 A158703 A209223 * A207927 A208107 A207728

Adjacent sequences:  A207689 A207690 A207691 * A207693 A207694 A207695

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 19 2012

STATUS

approved

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Last modified October 24 11:34 EDT 2021. Contains 348225 sequences. (Running on oeis4.)