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A199233
Number of nX4 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 at least one horizontal or vertical neighbor
1
0, 12, 134, 7772, 233185, 2350573, 198168342, 5945464970, 61459551305, 5513397881816, 170180145113452, 1793698349077584, 165352227478417900, 5196360663854340690, 55445845644254306328, 5198278149707750425296
OFFSET
1,2
COMMENTS
Column 4 of A199237
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1....0..0..0..1....0..0..0..1....0..0..1..0....0..0..1..1
..1..2..2..1....0..0..1..1....0..2..2..1....1..1..1..0....0..2..2..1
..1..1..0..2....2..2..1..2....1..2..0..0....2..2..1..2....2..2..1..1
..1..0..0..2....0..0..1..2....1..1..0..2....0..2..1..2....2..2..0..0
..1..2..2..2....2..2..1..2....1..1..2..2....0..0..2..2....1..1..0..0
CROSSREFS
Sequence in context: A214994 A208440 A218762 * A085938 A161124 A288035
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 04 2011
STATUS
approved