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A189257 Number of n X n binary arrays without the pattern 0 0 1 diagonally, antidiagonally or horizontally 1
2, 16, 280, 8900, 552752, 68635317, 17747766886, 9421503162646, 10606582683139102, 24593238398265693575, 121227430181311808878846, 1234571538047080619811567488, 26705899629138438568650919545084 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A189264

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..15

EXAMPLE

Some solutions for 3X3

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

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

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

CROSSREFS

Sequence in context: A217816 A000182 A009764 * A227674 A102599 A123744

Adjacent sequences:  A189254 A189255 A189256 * A189258 A189259 A189260

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 19 2011

STATUS

approved

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Last modified October 18 18:10 EDT 2018. Contains 316323 sequences. (Running on oeis4.)