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A216662
Number of horizontal, vertical or knight-move neighbor colorings of an nX4 array with new integer colors introduced in row major order
0
5, 279, 59799, 45120796, 84915719366
OFFSET
1,1
COMMENTS
Column 4 of A216663
EXAMPLE
Some solutions for n=2
..0..1..2..3....0..1..2..1....0..1..2..1....0..1..2..3....0..1..2..3
..3..2..4..0....3..4..5..3....3..2..3..0....4..0..5..0....1..4..5..6
CROSSREFS
Sequence in context: A225781 A368754 A057209 * A203521 A276556 A283569
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 13 2012
STATUS
approved