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A215903
Number of diagonal and antidiagonal neighbor colorings of the even squares of an nX7 array with new integer colors introduced in row major order
0
15, 203, 84550, 14050312, 37060769357, 18383354944364, 148049909203591059, 152834703746357948488, 2765650341438362598776986, 4971673449387903153569761420, 170381714096217475684749198312607
OFFSET
1,1
COMMENTS
Column 7 of A215904
EXAMPLE
Some solutions for n=3
..0..x..1..x..2..x..3....0..x..1..x..2..x..3....0..x..0..x..1..x..2
..x..4..x..4..x..5..x....x..4..x..5..x..4..x....x..3..x..4..x..5..x
..6..x..6..x..0..x..1....0..x..0..x..0..x..3....6..x..1..x..0..x..2
CROSSREFS
Sequence in context: A012566 A238992 A216465 * A373294 A070968 A075280
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 26 2012
STATUS
approved