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A232340 Number of 6Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal.

%I A232340 #7 Jul 23 2025 07:19:43
%S A232340 1,288,5338,16338,312276,1047700,20052758,71916112,1303776080,
%T A232340 4965633966,85069249698,342465661280,5558842468148,23543239967730,
%U A232340 363597929464136,1613453348902866,23803367852101370,110263048814908764
%N A232340 Number of 6Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal.
%C A232340 Row 6 of A232335
%H A232340 R. H. Hardin, <a href="/A232340/b232340.txt">Table of n, a(n) for n = 1..210</a>
%H A232340 R. H. Hardin, <a href="/A232340/a232340.txt">Empirical recurrence of order 80</a>
%F A232340 Empirical recurrence of order 80 (see link above)
%e A232340 Some solutions for n=5
%e A232340 ..0..1..0..2..0....0..1..0..1..2....0..1..2..1..0....0..1..2..1..0
%e A232340 ..2..1..0..1..2....2..1..0..1..2....0..1..0..2..0....0..1..2..1..0
%e A232340 ..2..1..2..1..2....0..1..2..1..0....2..1..0..1..2....0..1..2..1..0
%e A232340 ..0..1..2..1..0....2..1..2..1..0....2..1..2..1..0....0..1..2..1..2
%e A232340 ..2..1..2..1..2....0..1..2..1..2....0..1..0..2..0....2..1..2..1..2
%e A232340 ..0..1..2..1..2....0..1..0..1..0....2..1..0..1..2....0..1..2..1..0
%K A232340 nonn
%O A232340 1,2
%A A232340 _R. H. Hardin_, Nov 22 2013