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A317870 Number of nX7 0..1 arrays with every element unequal to 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
0, 22, 10, 1089, 3303, 27620, 163297, 1242087, 7872632, 53760082, 353252004, 2390946331, 15793996654, 106138988508, 705385250439, 4723352116586, 31474104782001, 210349127355642, 1403285636312709, 9371971431288242 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A317871.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A317871.

Sequence in context: A104061 A196103 A196100 * A195906 A033342 A102612

Adjacent sequences:  A317867 A317868 A317869 * A317871 A317872 A317873

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 09 2018

STATUS

approved

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Last modified April 25 13:31 EDT 2019. Contains 322461 sequences. (Running on oeis4.)