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A207049
Number of (n+1)X8 0..2 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases
1
41589, 9582, 5850, 9144, 13752, 19200, 35904, 54528, 77376, 146304, 223200, 316032, 590592, 895104, 1264512, 2362368, 3580416, 5058048, 9449472, 14321664, 20232192, 37797888, 57286656, 80928768, 151191552, 229146624, 323715072, 604766208
OFFSET
1,1
COMMENTS
Column 7 of A207050
LINKS
FORMULA
Empirical: a(n) = 4*a(n-3) for n>15
EXAMPLE
Some solutions for n=4
..0..0..1..1..0..2..2..2....0..0..2..1..1..1..1..1....0..2..1..1..0..2..2..1
..0..1..1..1..2..2..2..0....0..0..1..1..1..2..2..1....0..1..1..1..2..2..2..1
..1..1..1..2..2..2..0..0....0..1..1..1..2..2..2..1....1..1..1..2..2..2..0..0
..1..1..2..2..2..0..0..0....1..1..1..2..2..2..0..0....1..1..2..2..2..0..0..0
..1..2..2..2..0..0..0..1....1..1..2..2..2..0..0..0....1..2..2..2..0..0..0..1
CROSSREFS
Sequence in context: A202718 A165114 A002879 * A236482 A375964 A163392
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 14 2012
STATUS
approved