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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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 12 2018
STATUS
approved

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Last modified April 21 04:51 EDT 2024. Contains 371850 sequences. (Running on oeis4.)