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A180990 Number of (n+1)xn binary matrices with rows and then columns in strictly increasing order as binary numbers 0
0, 0, 1, 19, 721, 67264, 16731459, 11654912023, 23649647075402, 144714747782240313, 2752761136943759699903, 167080696204654407079545988, 33078287865123858428157169233610 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Subdiagonal 1 of A180989

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

All solutions for 4X3

..0..1..1

..1..0..0

..1..0..1

..1..1..0

CROSSREFS

Sequence in context: A223521 A231160 A078986 * A041687 A041684 A157165

Adjacent sequences:  A180987 A180988 A180989 * A180991 A180992 A180993

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 30 2010

STATUS

approved

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Last modified April 24 13:28 EDT 2014. Contains 240983 sequences.