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A189156 Number of nX4 binary arrays without the pattern 0 0 1 1 diagonally, vertically or horizontally 1
15, 225, 3375, 37976, 424401, 4597967, 48460966, 507947896, 5289780940, 54890361712, 568739622865, 5886254888757, 60885233141712, 629580674428109, 6508873299252199, 67284551942503294, 695503798053171610 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A189161

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 5X4

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

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

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

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

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

CROSSREFS

Sequence in context: A189900 A189338 A189774 * A267731 A001024 A012643

Adjacent sequences:  A189153 A189154 A189155 * A189157 A189158 A189159

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 17 2011

STATUS

approved

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Last modified October 18 03:25 EDT 2021. Contains 348065 sequences. (Running on oeis4.)