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A206870 Number of nX7 0..1 arrays avoiding 0 0 0 horizontally and 1 0 1 vertically 1
81, 6561, 165783, 4108471, 115505069, 3254925997, 90497940567, 2513905109615, 69918135147567, 1945015733467487, 54104019551291657, 1504951979516380911, 41861310528949142861, 1164403984942205341081, 32388853771860099448897 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A206871
LINKS
EXAMPLE
Some solutions for n=4
..0..1..1..1..1..0..1....0..1..1..1..0..0..1....1..0..1..1..1..0..0
..0..1..0..1..1..0..1....0..0..1..0..1..1..0....0..1..0..1..1..0..1
..1..1..0..0..1..0..1....0..0..1..0..1..1..0....0..1..0..1..0..1..1
..0..1..1..0..1..1..1....0..1..1..1..0..1..1....0..0..1..1..0..0..1
CROSSREFS
Sequence in context: A206993 A223791 A206935 * A181223 A223977 A188565
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 13 2012
STATUS
approved

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)