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A215958
Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an nX7 array with new integer colors introduced in row major order
0
5, 136, 35167, 5219070, 10289785215, 4761748786964
OFFSET
1,1
COMMENTS
Column 7 of A215959
EXAMPLE
Some solutions for n=4
..0..x..1..x..2..x..3....0..x..1..x..2..x..3....0..x..1..x..2..x..3
..x..1..x..3..x..1..x....x..1..x..4..x..0..x....x..1..x..4..x..5..x
..1..x..3..x..1..x..4....1..x..3..x..5..x..6....1..x..3..x..0..x..1
..x..4..x..2..x..4..x....x..2..x..7..x..2..x....x..3..x..0..x..2..x
CROSSREFS
Sequence in context: A367528 A320995 A061453 * A216337 A142294 A279307
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 28 2012
STATUS
approved