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A207923 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 1 1 vertically 1
2, 16, 72, 576, 7744, 138384, 3773248, 143233024, 7961867964, 694232238436, 87251969161984, 15584659071915024, 4290136697951345984, 1785288592992685527184, 1059504761310616996153800 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A207928

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..19

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A207677 A207508 A208063 * A207839 A216424 A212897

Adjacent sequences:  A207920 A207921 A207922 * A207924 A207925 A207926

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 21 2012

STATUS

approved

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Last modified September 20 02:19 EDT 2021. Contains 347577 sequences. (Running on oeis4.)