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A320407 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
32, 257, 1970, 18725, 191615, 1957026, 19677729, 199877194, 2025592349, 20591906814, 209152278873, 2125269466703, 21596517936302, 219473499133689, 2230457205782323, 22667637795146693, 230368898318395100 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A320409.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A320409.

Sequence in context: A357788 A022327 A318022 * A189651 A145711 A125369

Adjacent sequences: A320404 A320405 A320406 * A320408 A320409 A320410

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 12 2018

STATUS

approved

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Last modified March 29 05:02 EDT 2023. Contains 361596 sequences. (Running on oeis4.)