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A189338
Number of nX4 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally
1
15, 225, 3375, 36626, 390721, 3988168, 42069350, 442969881, 4709354541, 49857094654, 528436125424, 5591212296038, 59196669906872, 626540356943069, 6633322246811551, 70220475509151710, 743409267344795743
OFFSET
1,1
COMMENTS
Column 4 of A189343
LINKS
EXAMPLE
Some solutions for 5X4
..0..0..0..1....0..0..0..1....0..0..1..0....0..0..0..1....0..0..0..1
..1..0..1..0....0..0..1..0....0..0..1..0....0..1..1..0....0..0..0..0
..1..0..0..0....0..0..1..1....0..1..0..1....0..0..1..0....0..0..0..1
..0..0..1..0....0..1..0..0....1..0..1..0....1..1..1..0....0..1..1..0
..0..0..0..0....1..1..0..0....1..1..0..1....1..1..0..0....0..0..0..0
CROSSREFS
Sequence in context: A262336 A189906 A189900 * A189774 A189156 A267731
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 20 2011
STATUS
approved