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A189335 Number of n X n binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally 0
2, 16, 512, 36626, 6814820, 2650369322, 2739456017053, 6190300153637745 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A189343

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for 4X4

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

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

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

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

CROSSREFS

Sequence in context: A009710 A012393 A189899 * A189773 A189152 A265015

Adjacent sequences:  A189332 A189333 A189334 * A189336 A189337 A189338

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 20 2011

STATUS

approved

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Last modified January 18 07:55 EST 2022. Contains 350454 sequences. (Running on oeis4.)