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A205658 Number of (n+1)X8 0..3 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors. 1
62623348, 732727336, 9029185188, 186979308144, 4682468347176, 106351019923768, 2904705131186012, 69836058310563888, 1989650257922684392, 48627125950280766136, 1406446756952780801628, 34607286834571007711144 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A205659.
LINKS
EXAMPLE
Some solutions for n=4:
..2..0..2..1..1..0..1..1....1..2..0..0..1..3..3..2....3..3..0..1..0..3..1..0
..0..0..0..0..0..0..0..0....2..0..2..1..0..2..1..0....1..3..0..1..0..3..1..3
..0..0..0..0..0..0..0..0....0..0..0..0..0..0..0..0....0..1..3..0..2..1..0..3
..3..3..3..3..3..3..3..3....0..0..0..0..0..0..0..0....0..1..3..0..2..1..0..1
..3..3..3..3..3..3..3..3....2..3..3..3..0..1..1..0....1..2..0..1..0..3..2..2
CROSSREFS
Sequence in context: A096559 A203943 A125063 * A206187 A205369 A157855
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 30 2012
STATUS
approved

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Last modified March 28 04:13 EDT 2024. Contains 371235 sequences. (Running on oeis4.)