A223623 Number of nX5 0..1 arrays with row sums nondecreasing and column sums unimodal

16, 260, 3560, 45580, 557432, 6555965, 75329449, 847768800, 9404270528, 103171727760, 1121204732884, 12097458097201, 129682860664008, 1382943677857229, 14683008908944181, 155278885548939860

Offset

1,1

Comments

Column 5 of A223625

Links

R. H. Hardin, Table of n, a(n) for n = 1..17

Example

Some solutions for n=3
..0..1..0..0..0....0..1..0..0..0....0..0..0..1..0....1..1..0..0..0
..0..1..0..0..1....1..1..0..0..0....0..1..1..0..0....0..1..1..1..0
..1..1..1..1..0....0..0..1..1..1....1..1..1..1..1....1..1..1..1..1

Crossrefs

Sequence in context: A320362 A220742 A266023 * A264532 A240368 A204715

Adjacent sequences: A223620 A223621 A223622 * A223624 A223625 A223626

Keyword

nonn

Author

R. H. Hardin Mar 24 2013

Status

approved