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A180992 Number of (n+3)xn binary matrices with rows and then columns in strictly increasing order as binary numbers 0
0, 0, 6, 873, 194176, 91610331, 106664349231, 337206602197275, 3097011674559184126, 86891156143807447975507, 7735857823114195427126194239, 2249860503567334385742963521466736 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Subdiagonal 3 of A180989

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

All solutions for 6X3

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

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

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

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

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

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

CROSSREFS

Sequence in context: A078927 A064430 A279304 * A229629 A137801 A076667

Adjacent sequences:  A180989 A180990 A180991 * A180993 A180994 A180995

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 30 2010

STATUS

approved

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Last modified August 25 10:44 EDT 2019. Contains 326324 sequences. (Running on oeis4.)