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A210299
Half the number of (n+1)X8 0..3 arrays with every 2X2 subblock having at most one duplicate clockwise edge difference
1
872455004, 24016699289368, 658686645074030420, 18074362569780907584746, 495927352523356139887864420, 13607462253433812638431489199962, 373366766716480043025684339650029800
OFFSET
1,1
COMMENTS
Column 7 of A210300
LINKS
EXAMPLE
Some solutions for n=4
..3..1..3..3..0..0..3..1....1..0..0..0..0..3..1..2....1..1..1..3..3..3..2..0
..3..3..2..0..1..2..0..3....1..0..1..3..1..3..3..1....0..2..1..1..3..1..0..0
..3..1..2..0..3..0..1..3....1..3..0..1..0..0..1..0....1..0..2..3..2..1..1..0
..2..0..0..3..3..2..3..0....0..1..1..3..3..0..3..1....3..3..0..1..0..0..3..2
..0..3..0..3..2..2..0..2....1..3..2..1..1..1..0..3....3..1..1..3..0..1..0..0
CROSSREFS
Sequence in context: A214557 A214558 A183708 * A178557 A157798 A328135
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 19 2012
STATUS
approved