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A206962
Number of nX3 0..3 arrays avoiding the pattern z z+1 z in any row, column or nw-to-se diagonal
1
61, 3721, 188699, 9499613, 480085367, 24271094606, 1226952447969, 62023985354889, 3135394700412912, 158498453972463263, 8012311439021640681, 405033180576738573321, 20474975181681666327711, 1035037693923824296534346
OFFSET
1,1
COMMENTS
Column 3 of A206967
LINKS
EXAMPLE
Some solutions for n=4
..2..0..1....3..2..2....1..3..3....0..1..1....0..0..3....0..3..3....3..1..1
..0..2..0....0..2..3....1..1..3....3..3..0....0..1..1....0..1..3....1..3..2
..1..2..2....3..0..1....0..1..1....3..1..1....2..1..2....2..1..1....3..0..2
..3..0..0....2..3..3....0..1..1....3..2..1....2..1..2....2..1..1....1..1..1
CROSSREFS
Sequence in context: A206975 A206969 A206792 * A206572 A207577 A209087
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 14 2012
STATUS
approved