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A205655 Number of (n+1)X5 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
124048, 839872, 5016144, 41013960, 353779964, 3024213232, 26605030292, 240164548160, 2196863266988, 20067825935472, 184418956321412, 1693587495714136, 15615412887393200, 143611906940924648 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A205659.
LINKS
EXAMPLE
Some solutions for n=4:
..0..0..2..1..0....0..0..2..1..3....1..0..0..0..0....0..2..2..2..0
..1..0..2..1..2....1..0..2..1..3....3..3..3..3..3....0..1..2..3..3
..3..1..0..3..2....2..1..0..2..0....3..3..3..3..3....0..2..0..1..0
..3..1..0..3..0....2..1..0..2..0....0..1..2..3..1....2..1..0..2..1
..0..3..2..1..0....3..2..1..3..1....3..3..3..0..2....2..2..0..1..1
CROSSREFS
Sequence in context: A049358 A245682 A237322 * A206184 A205366 A185992
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 30 2012
STATUS
approved

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Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)