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A302223 Number of nX7 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
8, 1934, 15569, 251254, 3018243, 42508145, 553097760, 7403262824, 97939043966, 1301831347709, 17275065368012, 229303687769069, 3043569120232324, 40395942785616147, 536209245725631300, 7116991167351864042 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A302224.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A302224.

Sequence in context: A298845 A298652 A299606 * A302669 A302471 A303253

Adjacent sequences:  A302220 A302221 A302222 * A302224 A302225 A302226

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 03 2018

STATUS

approved

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Last modified June 29 21:05 EDT 2022. Contains 354913 sequences. (Running on oeis4.)