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A284073
Number of nX6 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.
1
0, 176, 31898, 2696970, 189363893, 11888242488, 700044712076, 39370013834758, 2141147641452532, 113490297082082382, 5893425866145396208, 300965611491917463584, 15157259115401323272094, 754409157482198595586778
OFFSET
1,2
COMMENTS
Column 6 of A284075.
LINKS
EXAMPLE
Some solutions for n=3
..1..1..1..0..1..1. .1..0..1..0..0..1. .0..0..0..0..0..1. .1..0..1..1..1..1
..1..1..1..0..0..0. .1..0..1..1..1..0. .1..1..0..1..1..1. .1..1..1..0..1..0
..1..0..0..0..0..1. .0..1..0..1..1..1. .0..0..0..1..1..1. .0..0..1..0..0..1
CROSSREFS
Cf. A284075.
Sequence in context: A158818 A229317 A035829 * A298250 A184293 A159426
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 19 2017
STATUS
approved