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A199359
Number of nX2 0..3 arrays with values 0..3 introduced in row major order, the number of instances of each value within one of each other, and every element equal to one or two horizontal or vertical neighbors
1
0, 0, 0, 5, 35, 11, 455, 2645, 32075, 21689, 904145, 2158685, 43508750, 36780344, 1476986472, 2347455892, 64539882234, 62222755553, 2415617534402, 3140426826416, 101999195453788, 105327949061765, 4032779888481758
OFFSET
1,4
COMMENTS
Column 2 of A199363
LINKS
EXAMPLE
Some solutions for n=6
..0..0....0..0....0..0....0..0....0..0....0..0....0..1....0..0....0..0....0..1
..1..0....0..1....0..1....1..0....0..1....0..1....0..1....1..0....1..0....0..1
..1..1....1..1....2..1....1..1....1..1....1..1....0..1....1..2....1..1....0..1
..2..3....2..2....2..1....2..2....2..2....2..3....2..3....1..2....2..2....2..2
..2..3....3..2....2..3....2..3....2..3....2..3....2..3....3..2....3..2....3..2
..2..3....3..3....3..3....3..3....3..3....2..3....2..3....3..3....3..3....3..3
CROSSREFS
Sequence in context: A169617 A174130 A095865 * A199584 A087675 A376610
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 05 2011
STATUS
approved