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A198530
Number of 2nX6 0..2 arrays with values 0..2 introduced in row major order and each element equal to exactly one horizontal or vertical neighbor
1
76, 3838, 213328, 12510524, 757941274, 46796529288, 2920541321626, 183371225099361, 11551938856624945, 729096061168837827, 46063831233179842268, 2911931787180884205541, 184135675347690092435300
OFFSET
1,1
COMMENTS
Column 3 of A198532
LINKS
EXAMPLE
Some solutions for n=4
..0..0..1..0..0..1....0..0..1..0..0..1....0..0..1..0..0..1....0..0..1..0..0..1
..2..2..1..2..2..1....2..2..1..2..2..1....2..2..1..2..2..1....1..2..1..2..2..1
..1..1..2..1..1..2....0..1..2..0..0..2....0..1..0..0..1..0....1..2..0..0..1..0
..0..0..2..0..0..2....0..1..2..1..1..2....0..1..2..2..1..0....2..0..2..2..1..0
..1..2..0..2..1..1....1..0..0..2..2..1....1..2..0..0..2..2....2..0..1..1..0..1
..1..2..0..2..0..0....1..2..2..0..0..1....1..2..1..1..0..1....1..1..2..2..0..1
..2..0..1..1..2..2....2..0..0..1..1..0....0..0..2..2..0..1....0..0..1..0..2..0
..2..0..2..2..0..0....2..1..1..2..2..0....2..2..1..1..2..2....2..2..1..0..2..0
CROSSREFS
Sequence in context: A035804 A017739 A278685 * A234176 A116264 A324434
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 26 2011
STATUS
approved