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A300644 Number of nX6 0..1 arrays with every element equal to 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
0, 19, 104, 1789, 28089, 456649, 7455411, 121708555, 1990954802, 32547397369, 532327808168, 8705226732028, 142365129531729, 2328217142648763, 38075317550124085, 622678903591246459, 10183203860874999028 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A300646.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300646.

Sequence in context: A195461 A096328 A184190 * A142300 A238108 A129081

Adjacent sequences:  A300641 A300642 A300643 * A300645 A300646 A300647

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 10 2018

STATUS

approved

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Last modified July 2 18:27 EDT 2022. Contains 355029 sequences. (Running on oeis4.)