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A266425 Number of nX5 binary arrays with rows and columns lexicographically nondecreasing and column sums nondecreasing. 1
6, 41, 259, 1556, 8764, 45907, 223075, 1005991, 4224203, 16588684, 61226525, 213418690, 705807396, 2223963956, 6702140026, 19383434369, 53965133477, 145029252226, 377163396856, 951257706522, 2331468492530, 5562985385965 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A266428.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..31

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A266428.

Sequence in context: A295117 A198795 A320090 * A194781 A323969 A252980

Adjacent sequences: A266422 A266423 A266424 * A266426 A266427 A266428

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 29 2015

STATUS

approved

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Last modified December 1 14:52 EST 2022. Contains 358468 sequences. (Running on oeis4.)