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A230473
Number of 5Xn 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero
1
0, 30, 16926, 2593962, 281740616, 33169633760, 3934875952932, 468738681959950, 55761205442553620, 6632928807891253950, 788965363164447297996, 93846883723526687128242, 11163030352379441952730540
OFFSET
1,2
COMMENTS
Row 5 of A230469
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0....0..1..0....0..1..1....0..1..1....0..1..0....0..2..0....0..2..1
..2..1..2....0..2..2....2..2..2....2..2..0....2..2..0....0..1..0....0..1..1
..1..0..2....1..0..2....1..0..1....1..0..2....2..0..0....2..0..0....2..0..0
..2..2..0....2..0..0....2..2..0....2..2..1....1..1..2....2..2..1....2..2..2
..1..1..1....0..1..0....0..1..0....0..1..0....0..2..1....1..1..1....2..0..1
CROSSREFS
Sequence in context: A176378 A089037 A116076 * A088853 A306917 A135349
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 20 2013
STATUS
approved