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A318022 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
32, 257, 1382, 9063, 60157, 400016, 2495323, 16110625, 103827789, 672266391, 4358202529, 28286904449, 183768652418, 1194433177052, 7767233878635, 50519999745212, 328673287698990, 2138526574564068, 13915945230318569 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A318024.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A318024.

Sequence in context: A097243 A357788 A022327 * A320407 A189651 A145711

Adjacent sequences: A318019 A318020 A318021 * A318023 A318024 A318025

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 12 2018

STATUS

approved

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Last modified January 30 09:51 EST 2023. Contains 359943 sequences. (Running on oeis4.)