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A301911 Number of 7Xn 0..1 arrays with every element equal to 0, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero. 1
64, 1, 117, 65, 196, 1999, 8781, 104732, 770376, 7398173, 75183520, 712349998, 7178506389, 72042620797, 721879978606, 7250047119979, 72777298549367, 730558484014599, 7332580130417856, 73594615185044259, 738663477116841069 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A301906.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

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

CROSSREFS

Cf. A301906.

Sequence in context: A203262 A174927 A303329 * A302155 A288923 A123964

Adjacent sequences:  A301908 A301909 A301910 * A301912 A301913 A301914

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 28 2018

STATUS

approved

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Last modified August 7 04:39 EDT 2020. Contains 336274 sequences. (Running on oeis4.)