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A208063 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 0 1 1 vertically 1
2, 16, 72, 576, 3696, 26244, 198000, 1638400, 12913840, 117722500, 1052059680, 10059287616, 97769309736, 1020075760144, 10507456855392, 116747852120064, 1295601058976256, 15148523442518244, 177995312325281880 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A208069

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..32

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A208374 A207677 A207508 * A207923 A207839 A216424

Adjacent sequences:  A208060 A208061 A208062 * A208064 A208065 A208066

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 23 2012

STATUS

approved

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Last modified August 14 13:43 EDT 2022. Contains 356117 sequences. (Running on oeis4.)