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!)
A229777 Number of 5X5 0..n arrays with rows in lexicographically nondecreasing order and columns in nonincreasing order 1
252, 2179956, 3062815568, 843211336888, 81937334158292, 3896490956821414, 110102810429666544, 2093314279759590565, 29136130649614970102, 315228320642171324718, 2770642691605055402356, 20456013945849864263232 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 5 of A229774
LINKS
EXAMPLE
Some solutions for n=1
..1..0..0..0..0....0..0..0..0..0....1..1..0..0..0....0..0..0..0..0
..1..0..0..0..0....1..1..0..0..0....1..1..0..0..0....0..0..0..0..0
..1..0..0..0..0....1..1..1..0..0....1..1..0..0..0....1..1..1..0..0
..1..1..0..0..0....1..1..1..0..0....1..1..0..0..0....1..1..1..0..0
..1..1..1..1..0....1..1..1..1..0....1..1..1..1..0....1..1..1..1..0
CROSSREFS
Sequence in context: A172557 A068275 A068287 * A083957 A172656 A172760
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 29 2013
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 28 08:22 EDT 2024. Contains 371236 sequences. (Running on oeis4.)