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 A208495 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 1 0 and 1 1 1 vertically 1

%I #7 Dec 18 2015 18:18:03

%S 2,16,60,324,1794,12654,111328,1037300,13597800,200667632,3402101520,

%T 81763293780,1957289927740,66305181080964,2590637896086730,

%U 114679284980561840,7286860676676341916,454949245195033857996

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

%C Diagonal of A208501

%H R. H. Hardin, <a href="/A208495/b208495.txt">Table of n, a(n) for n = 1..32</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 27 2012

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Last modified May 19 20:30 EDT 2024. Contains 372703 sequences. (Running on oeis4.)