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A318548 Number of nX4 0..1 arrays with every element unequal to 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
2, 10, 21, 64, 219, 589, 1782, 5621, 17333, 54199, 169770, 532625, 1674674, 5267287, 16571936, 52167148, 164217643, 517100360, 1628230629, 5127481455, 16147257228, 50851033975, 160145034188, 504341598687, 1588336701913, 5002186675765 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A318552.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A318552.

Sequence in context: A296555 A231376 A304700 * A318210 A080881 A138298

Adjacent sequences:  A318545 A318546 A318547 * A318549 A318550 A318551

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 28 2018

STATUS

approved

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Last modified May 27 12:58 EDT 2022. Contains 354097 sequences. (Running on oeis4.)