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A209713
1/4 the number of (n+1)X6 0..3 arrays with every 2X2 subblock having distinct clockwise edge differences
1
63280, 9278940, 1293734407, 183988612894, 26024000948100, 3690894707522275, 522757733883587522, 74095286689410395475, 10497954243766841570370, 1487704397822521872822441, 210801722411081467285442780
OFFSET
1,1
COMMENTS
Column 5 of A209716
LINKS
EXAMPLE
Some solutions for n=4
..1..0..0..0..0..3....1..0..0..1..1..1....1..0..0..1..0..2....0..3..1..3..0..1
..1..3..1..3..1..3....1..3..2..3..0..3....3..2..3..1..3..3....0..1..0..2..3..1
..1..0..3..2..3..0....3..0..0..3..1..3....3..0..1..0..0..1....3..3..2..3..0..3
..0..2..0..0..1..0....2..2..3..1..0..1....2..3..1..3..2..0....0..1..0..3..1..1
..0..3..1..3..3..0....3..0..1..0..3..0....2..0..0..0..3..0....3..3..2..2..3..0
CROSSREFS
Sequence in context: A322689 A234080 A232264 * A230681 A209793 A115748
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 11 2012
STATUS
approved