login
A199251
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 no element equal to any horizontal or vertical neighbor
1
1, 14, 114, 447, 16898, 311216, 2913528, 11312517, 551973865, 11307744507, 111458340272, 438326135133, 23492069994614, 506092203408916, 5117349646825383, 20296888647373122, 1141664017876511539
OFFSET
1,2
COMMENTS
Column 3 of A199256
LINKS
EXAMPLE
Some solutions for n=4
..0..1..0....0..1..2....0..1..2....0..1..2....0..1..2....0..1..0....0..1..2
..2..0..3....3..2..3....3..2..1....3..2..0....2..3..0....2..3..1....1..3..0
..1..3..2....2..3..1....0..3..0....1..3..2....3..0..1....3..0..2....3..1..2
..2..1..3....0..1..0....2..1..3....0..1..3....1..2..3....1..2..3....2..3..0
CROSSREFS
Sequence in context: A293874 A044346 A044727 * A199196 A071573 A076429
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 04 2011
STATUS
approved