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A188844 Number of n X n binary arrays without the pattern 0 0 1 vertically, antidiagonally or horizontally. 1

%I #9 Dec 26 2023 19:13:25

%S 2,16,219,5711,262588,23131221,3821933610,1214926248918,

%T 740978404013252,873971605623906976,1995026546716994781891,

%U 8837351494869683292347918,76024359194576916691616836771,1271387131008663780693344655620080

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

%C Diagonal of A188851.

%H R. H. Hardin, <a href="/A188844/b188844.txt">Table of n, a(n) for n = 1..15</a>

%e Some solutions for 3 X 3

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

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

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

%Y Cf. A188851.

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 12 2011

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Last modified May 5 14:41 EDT 2024. Contains 372275 sequences. (Running on oeis4.)