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!)
A200983 Number of n X n 0..4 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other 0
5, 10, 92, 1225, 4919, 752271, 29555346, 1278883650, 65182166083, 731587297275 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A200990
LINKS
EXAMPLE
Some solutions for n=3
..0..0..1....0..2..3....0..1..2....0..0..2....0..1..1....0..1..3....0..2..2
..1..3..4....1..2..4....0..2..3....1..2..3....2..3..4....0..1..4....1..3..3
..2..3..4....1..3..4....1..4..4....1..3..4....2..3..4....2..2..4....1..4..4
CROSSREFS
Sequence in context: A325583 A344194 A120598 * A344140 A267042 A119137
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 25 2011
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 June 20 16:59 EDT 2024. Contains 373530 sequences. (Running on oeis4.)