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A188845 Number of nX3 binary arrays without the pattern 0 0 1 vertically, antidiagonally or horizontally 1
7, 49, 219, 958, 3860, 15358, 59939, 232747, 899307, 3468816, 13362322, 51445648, 197998075, 761910893, 2931606169, 11279434226, 43396799102, 166963886874, 642368646269, 2471408829291, 9508325156265, 36581628609584, 140741386091368 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A188851
LINKS
FORMULA
Empirical: a(n) = 7*a(n-1) -10*a(n-2) -22*a(n-3) +57*a(n-4) +3*a(n-5) -77*a(n-6) +21*a(n-7) +42*a(n-8) -10*a(n-9) -13*a(n-10) +a(n-11) +2*a(n-12)
EXAMPLE
Some solutions for 4X3
..0..1..1....0..1..1....1..0..0....0..1..1....1..1..1....1..1..0....1..0..1
..1..1..1....0..1..0....0..1..1....1..0..1....1..1..0....0..1..0....0..1..1
..0..1..1....0..1..1....1..0..0....0..1..0....1..0..1....1..0..0....0..1..1
..1..1..0....0..1..1....0..0..0....1..1..1....0..0..0....0..0..0....0..1..0
CROSSREFS
Sequence in context: A223639 A188689 A188852 * A223632 A188502 A188517
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 12 2011
STATUS
approved

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Last modified March 19 09:40 EDT 2024. Contains 370981 sequences. (Running on oeis4.)