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A207351 Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 1 1 vertically 1
42, 1764, 8928, 43260, 186002, 684324, 2367656, 8000806, 26057006, 82907430, 260627110, 806084422, 2476671718, 7545089216, 22861190904, 68993933764, 207422313718, 622180142516, 1862113694818, 5564560256320, 16608301418960 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A207346

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A207850 A208839 A208687 * A207773 A207900 A207660

Adjacent sequences:  A207348 A207349 A207350 * A207352 A207353 A207354

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 17 2012

STATUS

approved

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Last modified January 17 20:06 EST 2022. Contains 350410 sequences. (Running on oeis4.)