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A318090 Number of nX7 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, 23, 15, 1976, 8525, 68301, 504606, 4057433, 31285292, 240249513, 1835199684, 14224588572, 109059566554, 843075304556, 6476620099640, 49958130687711, 384425885605155, 2962333140940211, 22808849182759504, 175696908902774160 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 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..0. .0..1..0..1..1..0..0. .0..1..1..0..0..1..1

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

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

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

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

CROSSREFS

Cf. A318091.

Sequence in context: A124601 A040508 A305943 * A070716 A217894 A204598

Adjacent sequences:  A318087 A318088 A318089 * A318091 A318092 A318093

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 16 2018

STATUS

approved

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Last modified October 28 17:59 EDT 2021. Contains 348329 sequences. (Running on oeis4.)