login
A199224
Number of nX2 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 zero or one horizontal or vertical neighbors
1
1, 6, 15, 148, 739, 1538, 19458, 99290, 199245, 2737170, 14308328, 28263858, 406132996, 2157586976, 4223483322, 62496247170, 335699045124, 653268735784, 9869313704764, 53437060321924, 103559574448252, 1588892060781914
OFFSET
1,2
COMMENTS
Column 2 of A199230
LINKS
EXAMPLE
Some solutions for n=4
..0..1....0..1....0..0....0..1....0..1....0..0....0..1....0..1....0..1....0..1
..1..2....0..1....1..2....0..1....2..0....1..1....2..0....0..2....2..0....2..2
..2..0....2..2....0..1....1..2....2..1....2..0....0..1....1..0....1..2....0..1
..1..0....1..0....2..2....0..2....0..1....2..1....2..1....1..2....0..2....2..1
CROSSREFS
Sequence in context: A013227 A013223 A219289 * A013224 A013230 A306342
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 04 2011
STATUS
approved