login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A203406 Number of (n+2)X9 binary arrays avoiding patterns 000 and 111 in rows and columns 1

%I

%S 176238,5327258,119835492,3024430930,72950746702,1791372199364,

%T 43680343039806,1068074622125486,26087996711485980,637482788594287422,

%U 15574804643638753398,380545025412528955724,9297752486304073629542

%N Number of (n+2)X9 binary arrays avoiding patterns 000 and 111 in rows and columns

%C Column 7 of A203407

%H R. H. Hardin, <a href="/A203406/b203406.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 01 2012

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 8 05:37 EST 2022. Contains 358672 sequences. (Running on oeis4.)