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A301539 Number of nX6 0..1 arrays with every element equal to 0, 1 or 3 horizontally or vertically adjacent elements, with upper left element zero. 1
13, 42, 154, 603, 2417, 10783, 47791, 215362, 990403, 4616134, 21616069, 101719485, 480319135, 2272163307, 10763099175, 51036985495, 242162709431, 1149466726275, 5457682636775, 25918135231397, 123098181426713, 584702778533156 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A301541.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A301541.

Sequence in context: A233298 A243028 A242544 * A240517 A074022 A232448

Adjacent sequences:  A301536 A301537 A301538 * A301540 A301541 A301542

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 23 2018

STATUS

approved

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Last modified April 17 01:26 EDT 2021. Contains 343051 sequences. (Running on oeis4.)