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A223623 Number of nX5 0..1 arrays with row sums nondecreasing and column sums unimodal 1
16, 260, 3560, 45580, 557432, 6555965, 75329449, 847768800, 9404270528, 103171727760, 1121204732884, 12097458097201, 129682860664008, 1382943677857229, 14683008908944181, 155278885548939860 (list; graph; refs; listen; history; text; internal format)
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

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Last modified June 28 12:59 EDT 2022. Contains 354907 sequences. (Running on oeis4.)