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!)
A202858 Number of n X n 0..2 arrays with row and column sums one greater than the previous row and column. 0
3, 6, 42, 1346, 223456, 202999208, 1049899768685 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
Some solutions for n=4
..0..0..1..2....0..0..1..1....0..0..2..1....0..1..0..1....0..0..0..2
..0..1..2..1....0..1..2..0....0..1..2..1....1..1..1..0....0..0..2..1
..1..2..1..1....2..0..0..2....1..2..0..2....0..0..2..2....2..2..0..0
..2..1..1..2....0..2..1..2....2..1..1..2....1..1..1..2....0..1..2..2
CROSSREFS
Column 2 of A202864.
Sequence in context: A125889 A300599 A002028 * A116315 A363475 A001886
KEYWORD
nonn,more
AUTHOR
R. H. Hardin, Dec 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 March 29 06:15 EDT 2024. Contains 371265 sequences. (Running on oeis4.)