A223780 - OEIS

A223780

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

16, 418, 8940, 170596, 2953268, 47578884, 723952524, 10511594736, 147010714764, 1991930366642, 26287414292840, 339219557133945, 4293634757761535, 53448756094555559, 655687863052989235, 7941160613884038234

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 5 of A223782

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..18

EXAMPLE

Some solutions for n=3

..0..0..1..1..1....1..0..0..1..1....0..1..0..0..1....0..1..1..1..0

..0..0..0..0..1....1..1..0..1..1....1..1..1..1..1....0..0..1..1..1

..0..0..0..0..0....1..1..0..0..1....1..0..1..1..0....0..1..0..0..1

CROSSREFS

Sequence in context: A035275 A173947 A264169 * A223714 A239645 A349966

Adjacent sequences: A223777 A223778 A223779 * A223781 A223782 A223783

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 27 2013

STATUS

approved