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A230249
Number of nX6 0..3 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 4, and upper left element zero
1
0, 522, 64838, 15075834, 2905031942, 575915716590, 113395635811566, 22307089878854146, 4393204701131698706, 865095876749918611674, 170331251165790970494850, 33537951155031500480807238
OFFSET
1,2
COMMENTS
Column 6 of A230250
LINKS
EXAMPLE
Some solutions for n=3
..0..1..0..3..2..1....0..0..1..0..1..0....0..1..0..3..2..1....0..1..0..2..3..2
..1..2..3..2..3..0....1..2..2..3..2..3....3..2..0..3..1..0....1..2..1..1..0..1
..0..3..2..1..0..3....0..3..2..1..1..0....2..1..1..2..0..3....2..3..0..0..3..2
CROSSREFS
Sequence in context: A263306 A128809 A279926 * A231284 A145497 A142778
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 13 2013
STATUS
approved