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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A215904

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..15

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

Adjacent sequences:  A215899 A215900 A215901 * A215903 A215904 A215905

KEYWORD

nonn

AUTHOR

R. H. Hardin Aug 26 2012

STATUS

approved

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Last modified September 28 12:34 EDT 2020. Contains 337393 sequences. (Running on oeis4.)