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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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 07 2018
STATUS
approved

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Last modified May 27 22:51 EDT 2023. Contains 362992 sequences. (Running on oeis4.)