A207894 - OEIS

%I #5 Mar 31 2012 12:37:20

%S 28,784,2520,20168,135714,856480,5888458,39828558,260749390,

%T 1761010222,11829617422,78462173820,526979351782,3530615876490,

%U 23530243300772,157698231146356,1055466664497864,7048335728590736,47191056299318688

%N Number of nX7 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 0 and 1 1 1 vertically

%C Column 7 of A207895

%H R. H. Hardin, <a href="/A207894/b207894.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 21 2012