A316175 - OEIS

A316175

Number of nX7 0..1 arrays with every element unequal to 1, 2, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

8, 306, 604, 5297, 66575, 976178, 12236682, 164577403, 2930093529, 42322928243, 623026657945, 10351266641036, 156056476320356, 2381223109622179, 38006618936524771, 582556616881336506, 8995837095115390590

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 7 of A316176.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A316176.

Sequence in context: A316454 A305014 A316647 * A317457 A352591 A220998

Adjacent sequences: A316172 A316173 A316174 * A316176 A316177 A316178

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 25 2018

STATUS

approved