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!)
A201831 Number of nX3 0..3 arrays with every diagonal, row and column running average nondecreasing rightwards and downwards and diagonally 1
23, 212, 1629, 11180, 71501, 434721, 2553223, 14601638, 81799885, 450682446, 2449953613, 13173208338, 70201196318, 371356326457, 1952380236002, 10211349328475, 53172089972396, 275828459680751, 1426182115328813 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A201836
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1....0..1..1....0..0..1....0..0..1....1..1..1....0..3..3....0..0..2
..1..1..2....0..1..2....0..0..3....0..1..1....1..1..2....0..3..3....0..3..2
..1..2..2....1..3..2....2..3..3....0..3..2....1..2..2....3..3..3....2..2..2
..1..2..2....1..2..2....1..3..3....0..3..3....1..3..3....1..3..3....2..3..3
..1..2..2....3..3..3....2..3..3....1..3..3....2..2..3....3..3..3....2..3..3
CROSSREFS
Sequence in context: A142374 A171342 A112747 * A027481 A201211 A194783
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 05 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 July 23 06:59 EDT 2024. Contains 374544 sequences. (Running on oeis4.)