The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A180993 Number of (n+4)xn binary matrices with rows and then columns in strictly increasing order as binary numbers 0

%I #2 Mar 31 2012 12:35:49

%S 0,0,4,2200,1283875,1408620622,3595756291357,24101118080151321,

%T 459717083252930306823,26428405768066461371584216,

%U 4776623401553625413419662091924

%N Number of (n+4)xn binary matrices with rows and then columns in strictly increasing order as binary numbers

%C Subdiagonal 4 of A180989

%e All solutions for 7X3

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

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

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

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

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

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

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

%K nonn

%O 1,3

%A _R. H. Hardin_ Sep 30 2010

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 May 13 09:49 EDT 2024. Contains 372504 sequences. (Running on oeis4.)