login
A187420
Number of (n+1)X3 0..2 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants
1
175, 1969, 6512, 44512, 319792, 2142214, 13328138, 88129302, 580578920, 3802787570, 24886205614, 163501852210, 1072581861748, 7032866591748, 46126761827268, 302624532393770, 1985178392452142, 13021958891247156
OFFSET
1,1
COMMENTS
Column 2 of A187425
LINKS
EXAMPLE
Some solutions for 5X3
..1..1..1....2..0..2....1..2..1....2..1..0....2..1..0....1..1..0....1..2..1
..2..1..0....2..2..2....0..1..1....1..1..1....0..1..2....2..2..0....0..0..0
..1..1..1....0..2..0....0..1..1....2..1..0....0..1..2....0..2..2....1..2..1
..2..2..2....0..0..0....1..1..1....2..1..2....0..1..2....1..2..1....1..1..0
..0..0..0....2..0..0....1..0..0....0..0..2....2..1..0....1..2..1....0..2..2
CROSSREFS
Sequence in context: A352109 A349674 A205470 * A186212 A355713 A222774
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 09 2011
STATUS
approved