login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A213416 Half the number of nX6 binary arrays with no 3X3 submatrix formed with any three rows and columns equal to J-I 0
32, 2048, 114302, 5524088, 235950302, 9107867048, 323797652462, 10764286026008 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A213418

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A302008 A301782 A316806 * A317523 A299652 A300206

Adjacent sequences:  A213413 A213414 A213415 * A213417 A213418 A213419

KEYWORD

nonn

AUTHOR

R. H. Hardin and N. J. A. Sloane Jun 10 2012

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 17 16:17 EDT 2021. Contains 347487 sequences. (Running on oeis4.)