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A223778 Number of nX3 0..1 arrays with row sums unimodal and column sums inverted unimodal 1
7, 53, 330, 1809, 8940, 41257, 180670, 756800, 3066706, 12093628, 46563397, 175879412, 653526033, 2392564820, 8651185991, 30941217363, 109551653219, 384528798543, 1339204256650, 4630162104037, 15905909415604, 54322204287215 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A223782

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..116

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A141911 A200766 A056590 * A223712 A065542 A279269

Adjacent sequences:  A223775 A223776 A223777 * A223779 A223780 A223781

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 27 2013

STATUS

approved

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Last modified January 22 19:16 EST 2020. Contains 331153 sequences. (Running on oeis4.)