

A183486


Number of n X 3 0..3 arrays with every element equal to either the sum mod 4 of its vertical neighbors or the sum mod 4 of its horizontal neighbors.


1



7, 88, 281, 1859, 13246, 63807, 397689, 2438053, 13469845, 81119250, 479643334, 2766405526, 16398672521, 96270399637, 562412130699, 3312658458361, 19432125660759, 113930244019306, 669493281487815, 3928178034671452
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OFFSET

1,1


COMMENTS

Column 3 of A183492.


LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200


EXAMPLE

Some solutions for 5 X 3
..0..2..2....0..0..0....0..2..2....3..1..2....2..2..3....2..1..1....0..3..2
..0..0..0....0..0..0....0..0..0....3..1..2....2..2..3....2..1..1....0..3..2
..0..0..0....0..1..1....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..1..1..0....0..2..2....1..3..3....0..0..0....3..0..1....1..3..1....2..0..2
..3..3..0....0..1..1....1..3..3....2..2..0....3..0..1....1..3..1....2..0..2


CROSSREFS

Cf. A183492.
Sequence in context: A034238 A132486 A297547 * A155465 A296735 A137143
Adjacent sequences: A183483 A183484 A183485 * A183487 A183488 A183489


KEYWORD

nonn


AUTHOR

R. H. Hardin Jan 05 2011


STATUS

approved



