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A300464 Number of nX7 0..1 arrays with every element equal to 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
0, 41, 212, 2585, 55663, 935121, 17675111, 330639367, 6123205255, 114735094931, 2136975985538, 39899944005038, 744635053156875, 13895291324256516, 259332066899793610, 4839626748377777725, 90318818165804970003 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A300465.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300465.

Sequence in context: A204620 A172085 A251094 * A326228 A142392 A142943

Adjacent sequences:  A300461 A300462 A300463 * A300465 A300466 A300467

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 06 2018

STATUS

approved

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Last modified October 20 20:24 EDT 2019. Contains 328273 sequences. (Running on oeis4.)