login
A223713
Number of nX4 0..1 arrays with row sums and column sums unimodal
1
11, 155, 1805, 18496, 170568, 1470857, 11966981, 93299973, 701423479, 5128436121, 36599373747, 256236584115, 1763984442229, 11980047684055, 80385275288827, 534085541609370, 3517085278076966, 22991638514887063, 149296025431319355
OFFSET
1,1
COMMENTS
Column 4 of A223716
LINKS
EXAMPLE
Some solutions for n=3
..0..0..1..0....0..1..1..1....0..1..0..0....1..0..0..0....1..1..0..0
..0..1..1..0....0..1..1..0....1..1..1..1....0..1..1..0....1..0..0..0
..0..0..1..0....0..0..0..1....0..0..1..1....0..0..1..1....0..1..0..0
CROSSREFS
Sequence in context: A321105 A051608 A191369 * A223779 A191534 A243947
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 26 2013
STATUS
approved