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A215957
Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an nX6 array with new integer colors introduced in row major order
0
2, 34, 1534, 145563, 30312074, 9260821180, 4761748786964, 3146896493234825
OFFSET
1,1
COMMENTS
Column 6 of A215959
EXAMPLE
Some solutions for n=4
..0..x..1..x..2..x....0..x..1..x..2..x....0..x..1..x..2..x....0..x..1..x..0..x
..x..1..x..3..x..0....x..1..x..3..x..4....x..3..x..4..x..0....x..2..x..0..x..3
..3..x..2..x..0..x....1..x..0..x..5..x....1..x..5..x..0..x....1..x..0..x..4..x
..x..4..x..5..x..6....x..5..x..1..x..3....x..0..x..3..x..6....x..3..x..5..x..6
CROSSREFS
Sequence in context: A367510 A187546 A195005 * A171732 A291903 A340863
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 28 2012
STATUS
approved