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A205915 Number of (n+1) X 7 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and the same number of counterclockwise edge increases as its vertical neighbors. 1
218034, 2554848, 93488811, 3820547082, 157611325827, 6566654061039, 274342874332980, 11488530154756449, 481501347104927403, 20193219305106753600, 847089560605594813119, 35541367887133558923699 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A205917.
LINKS
EXAMPLE
Some solutions for n=4:
..2..1..2..1..1..1..0....1..0..2..0..0..0..0....0..0..2..2..1..1..1
..1..1..2..1..2..1..0....0..0..2..0..1..0..1....0..2..2..1..1..2..1
..2..1..1..1..1..1..1....2..2..2..0..0..0..0....2..2..1..1..2..2..2
..1..1..0..0..0..1..2....1..2..0..0..1..1..1....2..1..1..2..2..0..2
..2..1..1..0..1..1..1....1..2..2..0..1..0..0....2..2..2..2..0..0..0
CROSSREFS
Sequence in context: A078520 A019291 A205734 * A205907 A157377 A090873
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 01 2012
STATUS
approved

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Last modified March 29 10:44 EDT 2024. Contains 371268 sequences. (Running on oeis4.)