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A207241 Number of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 0 vertically 1

%I #5 Mar 31 2012 12:37:16

%S 25,625,3355,17929,122197,683257,3510185,18982182,99915970,505774921,

%T 2568234125,12986009155,64726463915,321230475656,1590644502408,

%U 7833019325065,38434345117724,188211984325803,919273907789464

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

%C Column 7 of A207242

%H R. H. Hardin, <a href="/A207241/b207241.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 16 2012

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)