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A318044 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 46, 1648, 42793, 1304057, 37826270, 1097286743, 32035215365, 933917327711, 27217103197673, 793339183054443, 23124520193958899, 674035058682860528, 19646860749850864344, 572669260893508995369, 16692235797793244881719 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A318045.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A318045.

Sequence in context: A308101 A291129 A115608 * A263190 A331707 A223813

Adjacent sequences:  A318041 A318042 A318043 * A318045 A318046 A318047

KEYWORD

nonn

AUTHOR

R. H. Hardin, Aug 13 2018

STATUS

approved

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Last modified December 2 07:33 EST 2021. Contains 349437 sequences. (Running on oeis4.)