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A198283
Number of 2nX12 0..2 arrays with values 0..2 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors
1
16, 700, 31718, 1478756, 70004726, 3337609528, 158791292898, 7572454386112, 361223237102398, 17233549055351780, 822235886561754748, 39230600563964575264, 1871782716035228820002, 89307446755046275015160
OFFSET
1,1
COMMENTS
Column 6 of A198285
LINKS
EXAMPLE
Some solutions for n=3
..0..0..0..0..0..0..1..1..1..1..1..1....0..0..1..1..1..1..1..1..1..1..0..0
..0..1..1..1..1..0..1..0..0..2..2..1....0..0..1..2..2..0..0..2..2..1..0..0
..0..1..2..2..1..0..1..0..0..2..2..1....2..2..1..2..2..0..0..2..2..1..2..2
..0..1..2..2..1..0..1..2..2..1..1..1....2..2..1..1..1..2..2..1..1..1..2..2
..0..1..1..1..1..0..1..2..2..1..0..0....1..1..2..2..1..2..2..1..2..2..1..1
..0..0..0..0..0..0..1..1..1..1..0..0....1..1..2..2..1..1..1..1..2..2..1..1
CROSSREFS
Sequence in context: A222139 A036513 A123824 * A283534 A294704 A264114
KEYWORD
nonn
AUTHOR
R. H. Hardin Oct 23 2011
STATUS
approved