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A305640 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 1
32, 284, 743, 6329, 48567, 385282, 3252937, 29925524, 280854245, 2612768319, 24785851660, 236772462876, 2251291660203, 21530551123401, 206148758486168, 1970437000025705, 18871772494554514, 180748165315349147 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A305642.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305642.

Sequence in context: A009526 A304345 A316216 * A317034 A305909 A317151

Adjacent sequences:  A305637 A305638 A305639 * A305641 A305642 A305643

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 07 2018

STATUS

approved

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Last modified October 22 12:48 EDT 2021. Contains 348168 sequences. (Running on oeis4.)