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A301667 Number of nX6 0..1 arrays with every element equal to 1, 2 or 4 horizontally or vertically adjacent elements, with upper left element zero. 1
5, 162, 1498, 14394, 146841, 1537496, 15498505, 159497778, 1631501428, 16710326446, 171088097185, 1752145711420, 17940714321741, 183715971451846, 1881222389643034, 19263608263871012, 197257711048154849 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A301669.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A301669.

Sequence in context: A274712 A117068 A185832 * A195950 A195951 A128068

Adjacent sequences:  A301664 A301665 A301666 * A301668 A301669 A301670

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 25 2018

STATUS

approved

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Last modified December 13 17:17 EST 2019. Contains 329970 sequences. (Running on oeis4.)