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A208199
Number of nX6 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than two of its immediate leftward or upward or left-upward diagonal neighbors
1
187, 648569, 2468504665, 9402035642924, 35810971705853725, 136398703432330477549, 519522527116810577984260, 1978784616446414312287693835, 7536898505819261464135073030914
OFFSET
1,1
COMMENTS
Column 6 of A208201
LINKS
EXAMPLE
Some solutions for n=4
..0..1..1..1..0..0....0..0..0..0..0..1....0..0..0..0..0..0....0..1..1..0..0..0
..0..1..0..1..0..1....0..1..2..1..3..2....0..1..1..0..2..1....0..1..2..3..2..1
..0..1..1..1..0..2....1..3..0..3..1..0....0..1..0..2..2..1....1..1..0..3..2..3
..3..0..1..2..1..1....2..1..0..3..3..3....0..3..1..0..1..0....3..0..0..2..1..3
CROSSREFS
Sequence in context: A208173 A200799 A241118 * A208406 A208413 A198905
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 24 2012
STATUS
approved