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Number of nX6 arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, with no occupancy greater than 2
0

%I #3 Jan 09 2013 16:29:04

%S 99,53291,30470039,17788952657,10441043545431,6137910765383119,

%T 3609497709468161601

%N Number of nX6 arrays of occupancy after each element stays put or moves to some horizontal or vertical neighbor, with no occupancy greater than 2

%C Column 6 of A221303

%e Some solutions for n=3

%e ..0..1..2..0..2..0....0..1..2..0..2..1....0..1..2..0..2..1....0..1..1..2..1..0

%e ..0..1..1..2..1..2....0..1..1..2..0..2....0..2..1..2..1..2....0..1..0..2..0..2

%e ..0..2..2..0..0..2....0..2..2..1..1..0....0..1..2..0..0..1....0..2..2..2..2..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 09 2013