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A199096
Number of nX3 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 two or fewer horizontal or vertical neighbors
1
1, 15, 280, 5295, 101460, 1999365, 40210161, 820951127, 16962540224, 353916457700, 7444303111792, 157654572063308, 3358267477535756, 71896125048485001, 1545960357028561441, 33370692254737883179
OFFSET
1,2
COMMENTS
Column 3 of A199101
LINKS
EXAMPLE
Some solutions for n=4
..0..1..0....0..1..1....0..1..2....0..1..2....0..1..0....0..1..0....0..1..1
..2..0..2....2..0..2....2..2..0....1..0..2....2..1..0....1..0..1....1..0..0
..1..0..1....1..2..2....1..0..2....2..0..2....2..0..1....2..2..1....2..2..2
..2..2..1....1..0..0....1..0..1....1..0..1....2..2..1....2..2..0....2..0..1
CROSSREFS
Sequence in context: A159239 A279976 A308835 * A060542 A095654 A279167
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 02 2011
STATUS
approved