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A206935 Number of nX7 0..1 arrays avoiding 0 0 0 horizontally and 0 1 1 vertically 1
81, 6561, 165783, 3227589, 48992069, 659747611, 8138711727, 95444167901, 1083046694943, 12066441712663, 133097165591799, 1461908430267595, 16040101557258779, 176117037501045883, 1936527748635116761 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A206936
LINKS
EXAMPLE
Some solutions for n=4
..1..1..1..0..1..1..0....1..0..0..1..1..0..1....1..1..1..0..0..1..0
..0..1..1..0..0..1..0....0..0..1..0..1..0..0....0..1..0..1..1..0..1
..1..0..0..1..1..1..0....1..1..0..0..1..1..0....0..0..1..0..0..1..0
..0..0..1..0..0..1..0....0..0..1..1..0..0..1....1..1..0..0..1..0..0
CROSSREFS
Sequence in context: A016948 A206993 A223791 * A206870 A181223 A223977
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 13 2012
STATUS
approved

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Last modified July 19 12:08 EDT 2024. Contains 374394 sequences. (Running on oeis4.)