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A317894 Number of nX6 0..1 arrays with every element unequal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
0, 16, 252, 3697, 67792, 1184196, 20734591, 364026326, 6382316173, 111913142446, 1962613676956, 34416957636316, 603541836561491, 10583875184727438, 185601684107768342, 3254759127437027807, 57076308019918523999 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A317896.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A317896.

Sequence in context: A110394 A220459 A160446 * A228982 A158531 A171321

Adjacent sequences:  A317891 A317892 A317893 * A317895 A317896 A317897

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 10 2018

STATUS

approved

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Last modified January 29 03:07 EST 2022. Contains 350672 sequences. (Running on oeis4.)