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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A184142 Number of nX7 binary arrays with rows and columns in nondecreasing order 1

%I #5 Mar 31 2012 12:35:56

%S 8,92,1682,42305,1202234,33345183,836488618,18470742266,358194085968,

%T 6148026957098,94402700488339,1310734458313359,16616390002366515,

%U 193963806947349704,2100034143080950846,21221195503865955621

%N Number of nX7 binary arrays with rows and columns in nondecreasing order

%C Column 7 of A180985

%H R. H. Hardin, <a href="/A184142/b184142.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 3X7

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 09 2011

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 April 19 19:02 EDT 2024. Contains 371798 sequences. (Running on oeis4.)