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A283041
Number of nX7 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element.
1
26, 3232, 175963, 8912378, 414085368, 18455711930, 797350288363, 33705434438284, 1401215705047092, 57496998569457406, 2334654228770351159, 93982808773859979206, 3756077506881552506247, 149195064747909416762172
OFFSET
1,1
COMMENTS
Column 7 of A283042.
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0..1..0..1..0. .0..0..0..1..0..0..1. .0..1..1..0..0..0..0
..0..1..1..0..1..0..1. .1..1..0..0..0..1..0. .0..1..0..0..0..0..0
..0..0..0..0..1..0..0. .0..0..1..0..1..1..1. .0..0..0..1..1..0..1
CROSSREFS
Cf. A283042.
Sequence in context: A172010 A283571 A377637 * A183068 A173130 A232374
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 27 2017
STATUS
approved