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A230273
Number of nX6 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero
1
0, 108, 19996, 2348840, 261026756, 28716109350, 3159756711522, 347321368287746, 38183785495750352, 4197613545581221410, 461451167556083194646, 50728172936710501676214, 5576636888940842482458762
OFFSET
1,2
COMMENTS
Column 6 of A230275
LINKS
EXAMPLE
Some solutions for n=3
..0..2..1..2..0..1....0..1..0..2..1..2....0..1..0..0..2..1....0..1..1..2..1..2
..1..1..2..0..1..2....1..2..2..1..2..0....2..2..0..1..1..0....2..2..1..0..0..0
..2..0..1..2..1..0....0..0..1..0..2..1....0..1..2..2..0..2....1..0..1..2..2..1
CROSSREFS
Sequence in context: A269272 A209015 A299951 * A230613 A377246 A216592
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 14 2013
STATUS
approved