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A304930 Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 5 or 7 king-move adjacent elements, with upper left element zero. 1
21, 237, 186, 842, 2265, 6426, 15993, 42032, 107527, 294610, 802939, 2150494, 5755142, 15441423, 41220407, 110573603, 297147846, 796997468, 2138394333, 5740020020, 15394935940, 41303582771, 110856414628, 297465011704 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A304931.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..1..1..1..1. .0..0..0..0..0..1..1. .0..0..0..0..0..0..0
..1..1..1..1..1..1..1. .0..0..0..0..0..0..1. .0..0..0..0..0..0..1
..1..1..1..1..1..1..1. .0..0..0..0..0..0..0. .0..0..0..0..0..0..0
..0..1..1..1..1..1..1. .0..0..0..0..0..0..0. .1..0..0..0..0..0..0
..0..0..1..1..0..1..1. .0..0..0..0..0..1..0. .1..1..0..0..0..0..0
CROSSREFS
Cf. A304931.
Sequence in context: A173347 A360854 A303968 * A305346 A316614 A304668
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 21 2018
STATUS
approved

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Last modified July 13 02:50 EDT 2024. Contains 374265 sequences. (Running on oeis4.)