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A320401 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
64, 4105, 94842, 2908839, 83509525, 2392115850, 69104597430, 1987324601389, 57271367516963, 1649293396078122, 47501690934943189, 1368095396558548373, 39401919356219060903, 1134809125230760299100, 32683331680225837200024 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A320402.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A320402.

Sequence in context: A324490 A262396 A318015 * A203438 A264345 A099369

Adjacent sequences:  A320398 A320399 A320400 * A320402 A320403 A320404

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 12 2018

STATUS

approved

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Last modified August 22 16:17 EDT 2019. Contains 326178 sequences. (Running on oeis4.)