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A189189 Number of n X n binary arrays without the pattern 0 0 1 vertically or antidiagonally 1

%I #7 Dec 18 2015 18:17:37

%S 2,16,316,15326,1579664,367115337,184841938568,209311662962608,

%T 525679279319545840,2979655033608039508606,37875187935027408625277140,

%U 1087648851912447148168100296827,70353152136567154798416885107484140

%N Number of n X n binary arrays without the pattern 0 0 1 vertically or antidiagonally

%C Diagonal of A189196

%H R. H. Hardin, <a href="/A189189/b189189.txt">Table of n, a(n) for n = 1..20</a>

%e Some solutions for 3X3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 18 2011

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Last modified April 23 10:21 EDT 2024. Contains 371905 sequences. (Running on oeis4.)