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A188846 Number of nX4 binary arrays without the pattern 0 0 1 vertically, antidiagonally or horizontally 1
12, 144, 908, 5711, 32204, 181557, 1001368, 5521489, 30306759, 166323490, 911899467, 4999341631, 27402344925, 150194353126, 823189068247, 4511728088822, 24727593668449, 135525199872089, 742775009335794 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A188851

LINKS

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

FORMULA

Empirical: a(n) = 2*a(n-1) +28*a(n-2) -6*a(n-3) -237*a(n-4) -150*a(n-5) +757*a(n-6) +891*a(n-7) -942*a(n-8) -1844*a(n-9) +173*a(n-10) +1695*a(n-11) +562*a(n-12) -619*a(n-13) -422*a(n-14) +78*a(n-16) +31*a(n-17) +4*a(n-18)

EXAMPLE

Some solutions for 3X4

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

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

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

CROSSREFS

Sequence in context: A278121 A188609 A206873 * A190074 A188853 A188503

Adjacent sequences:  A188843 A188844 A188845 * A188847 A188848 A188849

KEYWORD

nonn

AUTHOR

R. H. Hardin Apr 12 2011

STATUS

approved

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Last modified May 18 18:18 EDT 2022. Contains 353823 sequences. (Running on oeis4.)