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A207811 Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 0 1 vertically.

%I A207811 #7 Jul 22 2025 20:52:05
%S A207811 26,676,4238,44538,379444,3511534,31431114,285153752,2572767886,
%T A207811 23265635822,210190098664,1899710583862,17166646906318,
%U A207811 155137779620824,1401955916796682,12669461215751574,114492932648683056
%N A207811 Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 0 1 vertically.
%C A207811 Row 6 of A207808
%H A207811 R. H. Hardin, <a href="/A207811/b207811.txt">Table of n, a(n) for n = 1..210</a>
%F A207811 Empirical: a(n) = 6*a(n-1) +47*a(n-2) -149*a(n-3) -401*a(n-4) +1365*a(n-5) +291*a(n-6) -3183*a(n-7) +1053*a(n-8) +2463*a(n-9) -1038*a(n-10) -814*a(n-11) +294*a(n-12) +112*a(n-13) -30*a(n-14) -5*a(n-15) +a(n-16)
%e A207811 Some solutions for n=4
%e A207811 ..1..0..1..0....1..1..0..0....1..1..0..1....1..1..1..0....0..1..0..0
%e A207811 ..1..1..1..1....1..1..1..0....1..0..1..1....1..1..1..1....1..0..1..1
%e A207811 ..1..1..1..1....1..0..1..0....1..0..1..0....0..1..1..1....1..0..1..1
%e A207811 ..1..1..0..0....1..0..1..0....0..1..1..0....0..1..0..1....0..1..0..1
%e A207811 ..1..1..0..0....1..0..1..1....0..1..0..1....1..1..0..1....0..1..0..0
%e A207811 ..0..1..1..1....0..1..0..1....0..1..0..1....1..0..1..0....0..1..1..0
%K A207811 nonn
%O A207811 1,1
%A A207811 _R. H. Hardin_ Feb 20 2012