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A318036 Number of nX7 0..1 arrays with every element unequal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
21, 91, 368, 1222, 6525, 32385, 204645, 1284756, 8133386, 51773454, 331053698, 2126470209, 13650378979, 87727825675, 563717129308, 3623363068053, 23291574091030, 149752468455094, 962944454411938, 6192412939272588 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A318037.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A318037.

Sequence in context: A203173 A194532 A065827 * A326164 A143843 A119109

Adjacent sequences:  A318033 A318034 A318035 * A318037 A318038 A318039

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 13 2018

STATUS

approved

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Last modified August 7 23:56 EDT 2020. Contains 336280 sequences. (Running on oeis4.)