[go: up one dir, main page]

login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A224167
Number of n X n 0..3 arrays with rows and antidiagonals unimodal and columns nondecreasing
0
4, 100, 4739, 272130, 16625026, 1038484760, 65713691148, 4209750150062, 273303096405547
OFFSET
1,1
COMMENTS
Diagonal of A224173
EXAMPLE
Some solutions for n=3
..0..1..0....0..0..0....0..3..2....2..0..0....0..0..1....0..0..2....0..0..1
..2..1..1....0..2..0....0..3..2....2..0..0....0..2..2....0..1..3....1..2..3
..3..3..2....2..2..0....1..3..2....2..3..0....1..2..3....0..3..3....2..3..3
CROSSREFS
Sequence in context: A165518 A127776 A266524 * A223858 A223981 A224385
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 31 2013
STATUS
approved