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!)
A180990 Number of (n+1)xn binary matrices with rows and then columns in strictly increasing order as binary numbers 0
0, 0, 1, 19, 721, 67264, 16731459, 11654912023, 23649647075402, 144714747782240313, 2752761136943759699903, 167080696204654407079545988, 33078287865123858428157169233610 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
COMMENTS
Subdiagonal 1 of A180989
LINKS
EXAMPLE
All solutions for 4X3
..0..1..1
..1..0..0
..1..0..1
..1..1..0
CROSSREFS
Sequence in context: A344131 A078986 A364299 * A041687 A041684 A157165
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 30 2010
STATUS
approved

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 March 29 09:32 EDT 2024. Contains 371268 sequences. (Running on oeis4.)