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A317870 Number of nX7 0..1 arrays with every element unequal to 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
0, 22, 10, 1089, 3303, 27620, 163297, 1242087, 7872632, 53760082, 353252004, 2390946331, 15793996654, 106138988508, 705385250439, 4723352116586, 31474104782001, 210349127355642, 1403285636312709, 9371971431288242 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 7 of A317871.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..1..1..0..1. .0..1..0..1..1..0..1. .0..1..0..0..1..0..0
..1..0..0..1..0..0..0. .1..0..0..1..0..0..1. .1..0..1..1..1..1..1
..0..1..0..1..0..1..1. .1..0..1..1..0..0..1. .0..0..0..0..1..1..0
..1..0..0..0..0..0..1. .0..1..1..0..1..0..0. .1..0..1..1..0..1..0
..1..0..1..1..1..1..0. .0..1..0..0..1..0..1. .1..0..0..1..0..0..1
CROSSREFS
Cf. A317871.
Sequence in context: A104061 A196103 A196100 * A195906 A033342 A102612
KEYWORD
nonn
AUTHOR
R. H. Hardin, Aug 09 2018
STATUS
approved

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Last modified July 18 13:04 EDT 2024. Contains 374378 sequences. (Running on oeis4.)