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A202434 Number of (n+2) X 9 binary arrays avoiding patterns 000 and 001 in rows, columns and nw-to-se diagonals. 1

%I #7 Oct 01 2021 17:34:18

%S 196350,6056600,148654000,3947786700,102007509450,2660934612820,

%T 69184636563900,1800845007153280,46856971357225920,

%U 1219354912423535360,31729710858162634460,825674511939159226300,21485693897343299644020

%N Number of (n+2) X 9 binary arrays avoiding patterns 000 and 001 in rows, columns and nw-to-se diagonals.

%C Column 7 of A202435.

%H R. H. Hardin, <a href="/A202434/b202434.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

%Y Cf. A202435.

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 19 2011

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Last modified April 17 23:23 EDT 2024. Contains 371767 sequences. (Running on oeis4.)