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A215956
Number of horizontal, vertical and diagonal neighbor colorings of the even squares of an nX5 array with new integer colors introduced in row major order
0
2, 12, 366, 6150, 847594, 30312074, 10289785215, 609400419815, 392670408857828, 33926900616984192, 35986649547821568686
OFFSET
1,1
COMMENTS
Column 5 of A215959
EXAMPLE
Some solutions for n=4
..0..x..1..x..0....0..x..1..x..2....0..x..1..x..2....0..x..1..x..0
..x..2..x..3..x....x..1..x..0..x....x..2..x..3..x....x..1..x..2..x
..4..x..5..x..4....1..x..0..x..1....1..x..3..x..1....1..x..3..x..4
..x..1..x..4..x....x..0..x..2..x....x..0..x..4..x....x..0..x..4..x
CROSSREFS
Sequence in context: A152686 A131690 A158261 * A251182 A266241 A012547
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 28 2012
STATUS
approved