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A303181 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
64, 361, 873, 6668, 88153, 1064399, 11901719, 141429948, 1665576584, 19531596851, 229828243748, 2702369176839, 31772132296596, 373609367008990, 4392997891254184, 51654822706157964, 607381965429018032 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A303182.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A303182.

Sequence in context: A281468 A302622 A302414 * A017486 A105918 A224042

Adjacent sequences:  A303178 A303179 A303180 * A303182 A303183 A303184

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 19 2018

STATUS

approved

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Last modified August 6 16:05 EDT 2020. Contains 336255 sequences. (Running on oeis4.)