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A199355
Number of nX6 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 one horizontal or vertical neighbors
0
45, 9175, 36379420, 6518500460, 32990481786550
OFFSET
1,1
COMMENTS
Column 6 of A199356
EXAMPLE
Some solutions for n=3
..0..1..2..3..2..3....0..1..0..2..0..2....0..1..2..0..3..1....0..1..2..3..3..2
..0..1..2..3..0..3....0..1..3..0..2..1....0..1..3..0..3..2....0..1..0..2..0..3
..1..0..3..1..2..1....1..3..1..3..2..3....1..0..2..3..1..2....1..0..1..2..1..3
CROSSREFS
Sequence in context: A134229 A364172 A209275 * A290819 A163035 A358707
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 05 2011
STATUS
approved