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A216027
Number of horizontal, vertical and diagonal neighbor colorings of the odd squares of an nX4 array with new integer colors introduced in row major order
1
1, 5, 29, 371, 6150, 167130, 5219070, 233834847, 11412814314, 741757937068, 51088102234508, 4468693984145541, 407520605922011467, 45668525708806007925, 5279748839226156263229, 732043230152926700952839
OFFSET
1,2
COMMENTS
Column 4 of A216031
LINKS
EXAMPLE
Some solutions for n=4
..x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1....x..0..x..1
..1..x..2..x....2..x..1..x....0..x..2..x....0..x..1..x....2..x..1..x
..x..2..x..3....x..3..x..2....x..1..x..0....x..1..x..2....x..1..x..3
..3..x..4..x....1..x..4..x....3..x..4..x....1..x..3..x....1..x..3..x
CROSSREFS
Sequence in context: A366411 A356486 A289483 * A087899 A202759 A103783
KEYWORD
nonn
AUTHOR
R. H. Hardin Aug 30 2012
STATUS
approved