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A283346
Number of nX7 0..1 arrays with no 1 equal to more than two of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.
1
0, 2174, 224927, 16714556, 1199035122, 80410575348, 5221636463228, 330934422791290, 20589913083547464, 1263123249564407540, 76616864903843273585, 4604629442514360092362, 274618733099617441712031
OFFSET
1,2
COMMENTS
Column 7 of A283347.
LINKS
EXAMPLE
Some solutions for n=2
..0..1..0..0..0..1..1. .1..0..1..0..0..1..1. .1..0..1..1..0..1..0
..1..1..1..1..0..1..0. .1..1..1..0..1..0..1. .1..0..0..1..1..1..0
CROSSREFS
Cf. A283347.
Sequence in context: A184380 A252238 A237303 * A252348 A252522 A159712
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 05 2017
STATUS
approved