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A301606 Number of nX6 0..1 arrays with every element equal to 0, 2 or 3 horizontally or vertically adjacent elements, with upper left element zero. 1
1, 10, 26, 226, 1297, 8888, 60841, 421168, 2940940, 20639456, 145157471, 1021952648, 7197614571, 50704160874, 357234289578, 2517047832160, 17735602594473, 124970744650942, 880592489506775, 6205028171908948 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A301608.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A301608.

Sequence in context: A259979 A235053 A217583 * A281510 A024168 A043107

Adjacent sequences:  A301603 A301604 A301605 * A301607 A301608 A301609

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 24 2018

STATUS

approved

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Last modified August 20 22:45 EDT 2019. Contains 326155 sequences. (Running on oeis4.)