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A318021 Number of nX5 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
16, 95, 419, 2227, 12039, 60157, 304184, 1569163, 8067785, 41794215, 216350270, 1121920799, 5819644170, 30203030342, 156774826962, 813943024542, 4226109266686, 21944484821348, 113952475164535, 591748572069652 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A318024.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A318024.

Sequence in context: A317608 A159245 A066487 * A333511 A320406 A241936

Adjacent sequences: A318018 A318019 A318020 * A318022 A318023 A318024

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 12 2018

STATUS

approved

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Last modified January 29 21:02 EST 2023. Contains 359931 sequences. (Running on oeis4.)