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A318087 Number of nX4 0..1 arrays with every element unequal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 3, 7, 47, 159, 547, 1976, 8031, 32040, 126847, 497430, 1956777, 7702762, 30347033, 119531416, 470732127, 1853881221, 7300825094, 28753367787, 113237861964, 445967783236, 1756341155437, 6916999603444, 27241103834694, 107283461298615 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A318091.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A318091.

Sequence in context: A263806 A074714 A064457 * A005650 A020754 A052381

Adjacent sequences:  A318084 A318085 A318086 * A318088 A318089 A318090

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 16 2018

STATUS

approved

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Last modified November 12 07:03 EST 2019. Contains 329052 sequences. (Running on oeis4.)