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A318074 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
64, 190, 404, 861, 2195, 9966, 46884, 184156, 819263, 3703730, 15865269, 69944965, 310937380, 1361781447, 5998215467, 26503896368, 116659469704, 513984726015, 2266966511804, 9989194862172, 44021107304800, 194059543279029 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A318075.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A318075.

Sequence in context: A209371 A317763 A318342 * A202332 A208636 A135270

Adjacent sequences: A318071 A318072 A318073 * A318075 A318076 A318077

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 15 2018

STATUS

approved

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Last modified March 22 04:35 EDT 2023. Contains 361413 sequences. (Running on oeis4.)