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%I A199258 #6 Mar 31 2012 12:36:36
%S A199258 3,36,449,6024,83890,1203424,17634348,262690636,3964097574,
%T A199258 60448089272,929736185578,14403575178424,224514368663504,
%U A199258 3518109050510528,55381725681044520,875329086340050012,13884232495508832254
%N A199258 Number of 3nX2 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to exactly one horizontal or vertical neighbor
%C A199258 3n elements of column 2 of A199261
%H A199258 R. H. Hardin, <a href="/A199258/b199258.txt">Table of n, a(n) for n = 1..99</a>
%e A199258 Some solutions for n=3
%e A199258 ..0..0....0..0....0..0....0..1....0..0....0..1....0..0....0..0....0..1....0..0
%e A199258 ..1..1....1..1....1..1....0..1....1..1....0..1....1..2....1..1....0..1....1..1
%e A199258 ..0..2....0..0....2..2....2..2....0..0....2..2....1..2....2..0....1..2....2..2
%e A199258 ..0..2....2..2....1..1....0..1....2..2....0..0....0..0....2..0....1..2....1..1
%e A199258 ..2..1....1..1....0..2....0..1....1..1....2..2....2..2....1..1....2..0....0..0
%e A199258 ..2..1....2..2....0..2....2..0....2..2....1..1....1..1....2..0....2..0....2..2
%e A199258 ..1..0....0..0....1..1....2..0....1..1....0..0....2..2....2..0....1..1....0..0
%e A199258 ..1..0....2..1....2..2....1..2....2..0....1..2....0..0....1..1....2..2....1..1
%e A199258 ..2..2....2..1....0..0....1..2....2..0....1..2....1..1....2..2....0..0....2..2
%K A199258 nonn
%O A199258 1,1
%A A199258 _R. H. Hardin_ Nov 04 2011

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