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A199258
Number of 3nX2 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor
1
3, 36, 449, 6024, 83890, 1203424, 17634348, 262690636, 3964097574, 60448089272, 929736185578, 14403575178424, 224514368663504, 3518109050510528, 55381725681044520, 875329086340050012, 13884232495508832254
OFFSET
1,1
COMMENTS
3n elements of column 2 of A199261
LINKS
EXAMPLE
Some solutions for n=3
..0..0....0..0....0..0....0..1....0..0....0..1....0..0....0..0....0..1....0..0
..1..1....1..1....1..1....0..1....1..1....0..1....1..2....1..1....0..1....1..1
..0..2....0..0....2..2....2..2....0..0....2..2....1..2....2..0....1..2....2..2
..0..2....2..2....1..1....0..1....2..2....0..0....0..0....2..0....1..2....1..1
..2..1....1..1....0..2....0..1....1..1....2..2....2..2....1..1....2..0....0..0
..2..1....2..2....0..2....2..0....2..2....1..1....1..1....2..0....2..0....2..2
..1..0....0..0....1..1....2..0....1..1....0..0....2..2....2..0....1..1....0..0
..1..0....2..1....2..2....1..2....2..0....1..2....0..0....1..1....2..2....1..1
..2..2....2..1....0..0....1..2....2..0....1..2....1..1....2..2....0..0....2..2
CROSSREFS
Sequence in context: A249894 A099670 A259131 * A262465 A322491 A305678
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 04 2011
STATUS
approved