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A283732
Number of 7Xn 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.
1
0, 3668, 478164, 28103560, 1712274593, 99246546144, 5410290101514, 290532256300862, 15323786418541986, 795029724871568274, 40818159546168252400, 2076399050875132311982, 104791804975655773251687
OFFSET
1,2
COMMENTS
Row 7 of A283726.
LINKS
EXAMPLE
Some solutions for n=2
..0..1. .0..0. .0..1. .1..1. .1..1. .1..0. .1..0. .0..1. .0..0. .1..1
..1..1. .1..1. .1..0. .1..1. .0..0. .1..1. .1..0. .1..1. .0..0. .1..1
..0..1. .1..1. .1..1. .1..0. .0..1. .1..0. .0..0. .1..0. .1..1. .0..1
..1..0. .0..0. .1..0. .0..0. .0..1. .0..1. .0..0. .1..1. .0..1. .1..0
..1..0. .1..1. .0..0. .1..0. .1..1. .1..1. .1..0. .1..0. .1..0. .1..1
..1..0. .1..1. .1..0. .1..0. .0..1. .1..0. .1..1. .0..1. .1..1. .0..1
..0..1. .1..0. .0..1. .0..1. .1..1. .0..1. .1..1. .0..1. .1..1. .1..1
CROSSREFS
Cf. A283726.
Sequence in context: A307937 A190923 A255088 * A283202 A365612 A205821
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 15 2017
STATUS
approved