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A199229
Number of nX7 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
90, 19458, 1114424, 530601540, 96560931821, 6443389324257
OFFSET
1,1
COMMENTS
Column 7 of A199230
EXAMPLE
Some solutions for n=4
..0..1..2..2..1..2..2....0..1..2..1..2..2..0....0..1..0..2..2..1..0
..0..1..0..0..2..0..0....0..1..2..0..0..1..2....0..1..2..0..1..2..1
..1..0..2..1..0..2..2....1..0..0..2..1..2..0....1..0..2..1..0..2..1
..0..1..1..0..2..1..1....0..1..1..2..0..1..2....0..1..0..2..2..0..2
CROSSREFS
Sequence in context: A359842 A295594 A200503 * A278411 A278631 A323317
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 04 2011
STATUS
approved