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A199228
Number of nX6 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
0
15, 1538, 108608, 9196334, 792389959, 70698654245, 6443389324257, 597038658964877, 56047378745263409
OFFSET
1,1
COMMENTS
Column 6 of A199230
EXAMPLE
Some solutions for n=4
..0..1..2..1..1..0....0..1..2..2..1..1....0..1..2..1..2..2....0..1..0..2..1..2
..0..1..2..0..2..1....0..2..1..0..2..2....0..1..2..0..1..0....0..1..2..1..2..1
..1..2..1..2..0..2....1..0..2..2..0..1....1..0..0..2..1..2....1..0..2..0..1..0
..0..2..0..1..0..2....0..1..0..0..1..2....0..2..2..1..0..1....0..2..0..2..1..2
CROSSREFS
Sequence in context: A209680 A122469 A119784 * A344638 A209681 A209682
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 04 2011
STATUS
approved