login
A199196
Number of nX3 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 zero or two horizontal or vertical neighbors
1
1, 14, 114, 447, 17598, 342958, 3366282, 13445925, 707828355, 15468414047, 160870584083, 660014693614, 37999381354839, 871398222241220, 9306441021808721, 38698706989763825, 2328196816238106071
OFFSET
1,2
COMMENTS
Column 3 of A199201
LINKS
EXAMPLE
Some solutions for n=4
..0..1..0....0..1..0....0..1..0....0..1..2....0..1..0....0..1..2....0..1..2
..2..3..1....2..3..2....2..3..1....1..2..3....1..2..3....1..0..3....3..2..3
..1..2..3....0..1..3....3..2..0....3..0..2....3..0..1....3..2..0....2..1..0
..2..3..0....3..2..1....1..3..2....1..3..0....2..3..2....1..3..2....1..0..3
CROSSREFS
Sequence in context: A044346 A044727 A199251 * A071573 A076429 A027204
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 03 2011
STATUS
approved