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!)
A267239 Number of n X n binary arrays with row sums nondecreasing and columns lexicographically nondecreasing. 0
2, 7, 42, 567, 20040, 2093467, 683027146, 723576702570, 2549735632656528, 30465608408449993885, 1250919952257037350168062, 178764247753852768666003981113, 89752660973687899647122735126286078 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A267245.
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0..1....0..0..0..1....0..0..1..1....0..0..0..1....0..0..0..1
..0..1..1..0....0..0..0..1....0..1..0..1....0..0..1..1....0..0..1..1
..1..0..1..0....0..0..1..1....1..1..0..0....0..1..0..1....1..1..1..0
..1..1..1..1....1..1..1..0....1..1..0..0....1..1..1..0....1..1..0..1
CROSSREFS
Cf. A267245.
Sequence in context: A091669 A108042 A152559 * A001174 A067975 A065298
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 12 2016
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 April 20 09:30 EDT 2024. Contains 371799 sequences. (Running on oeis4.)