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A215902
Number of diagonal and antidiagonal neighbor colorings of the even squares of an nX6 array with new integer colors introduced in row major order
2
5, 52, 2906, 373780, 87852626, 33093356640, 18383354944364, 14216420563705724, 14670987605491079080, 19558496206477343793824, 32828323775130245290328888, 67939294184937980415465539016, 170381709311721603692658697682568
OFFSET
1,1
COMMENTS
Column 6 of A215904
LINKS
EXAMPLE
Some solutions for n=3
..0..x..1..x..1..x....0..x..1..x..2..x....0..x..1..x..2..x....0..x..1..x..2..x
..x..2..x..3..x..2....x..3..x..3..x..1....x..3..x..3..x..4....x..3..x..0..x..4
..4..x..5..x..4..x....2..x..2..x..4..x....1..x..1..x..2..x....2..x..5..x..2..x
CROSSREFS
Sequence in context: A277202 A223248 A208303 * A215846 A216459 A107803
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 26 2012
STATUS
approved