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A210389
Number of (n+1)X8 0..2 arrays with every 2X2 subblock having one, two or three distinct clockwise edge differences
1
21815361, 76258263901, 266534819947777, 932029892451556289, 3259355143558953645273, 11398269977304081985788081, 39860904095207157826344048581, 139397673605040868918753655944293
OFFSET
1,1
COMMENTS
Column 7 of A210390
LINKS
EXAMPLE
Some solutions for n=4
..0..1..0..2..2..2..0..1....0..1..2..2..0..0..0..2....2..0..1..2..2..1..1..1
..2..1..1..1..2..1..0..1....0..2..2..0..2..0..0..0....1..0..1..2..2..2..0..1
..1..2..2..2..1..0..0..0....2..2..1..0..0..0..2..0....0..0..2..1..1..2..2..1
..0..1..2..1..0..0..2..0....0..2..2..2..1..1..1..0....2..0..1..1..2..1..1..0
..0..2..1..2..1..1..1..1....2..0..1..0..1..2..0..0....1..0..0..1..1..2..0..0
CROSSREFS
Sequence in context: A334372 A250912 A251998 * A364435 A118860 A186595
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 20 2012
STATUS
approved