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A216085
Number of horizontal and antidiagonal neighbor colorings of the odd squares of a 3Xn array with new integer colors introduced in row major order
1
1, 3, 5, 42, 136, 2440, 10900, 322776, 1805632, 77360796, 514264344, 29562890886, 226109935520, 16604827619828, 142953007039492, 12954736337254696, 123560080110698296, 13465808369740333664, 140585883811112551960
OFFSET
1,2
COMMENTS
Row 3 of A216084
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
..2..x..0..x....1..x..0..x....2..x..0..x....2..x..3..x....2..x..3..x
..x..1..x..2....x..2..x..0....x..2..x..1....x..0..x..3....x..2..x..3
CROSSREFS
Sequence in context: A158328 A258933 A060433 * A219018 A191088 A191089
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 01 2012
STATUS
approved