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A183717 1/20 of the number of (n+1) X 8 0..4 arrays with every 2 X 2 subblock strictly increasing clockwise or counterclockwise with one decrease. 1
408, 5776, 71712, 954496, 12606120, 168070828, 2239265280, 29887741084, 398877017736, 5325395568832, 71097798240000, 949288848361824, 12674717188992600, 169233802374938432, 2259618796412155200 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A183719.
LINKS
EXAMPLE
Some solutions for 3 X 8:
..0..4..0..4..0..4..0..4....1..0..2..0..1..0..1..0....3..0..3..0..4..0..4..0
..2..3..1..2..1..2..1..2....3..4..3..4..2..4..2..3....2..1..2..1..3..1..3..2
..0..4..0..4..0..3..0..3....2..0..1..0..1..0..1..0....3..4..3..0..4..0..4..1
...
...L..R..L..R..L..R..L.......L..R..L..R..L..R..L.......R..L..R..L..R..L..R...
...R..L..R..L..R..L..R.......R..L..R..L..R..L..R.......L..R..L..R..L..R..L...
CROSSREFS
Sequence in context: A234702 A234697 A337795 * A285767 A282479 A163024
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 06 2011
STATUS
approved

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Last modified July 17 18:40 EDT 2024. Contains 374377 sequences. (Running on oeis4.)