login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A266361 Number of nX7 binary arrays with rows and columns lexicographically nondecreasing and row and column sums nondecreasing. 0
8, 70, 614, 5752, 55734, 541207, 5061414, 44435916, 361401441, 2711340372, 18782567690, 120573237565, 720624005211 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A266362.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A266362.

Sequence in context: A293069 A056631 A190560 * A298281 A299355 A299175

Adjacent sequences:  A266358 A266359 A266360 * A266362 A266363 A266364

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 28 2015

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 24 23:43 EDT 2022. Contains 356951 sequences. (Running on oeis4.)