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!)
A186802 Number of (n+2)X7 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock 1
1916364, 207885695, 22986441710, 2543130767720, 281222068231208, 31102381776833744, 3439855711337907764, 380438338036924395628, 42075486550662042557800, 4653437870679555570938770 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A186806

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..22

EXAMPLE

Some solutions for 4X7

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

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

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

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

CROSSREFS

Sequence in context: A133542 A215568 A323343 * A179226 A166002 A285390

Adjacent sequences:  A186799 A186800 A186801 * A186803 A186804 A186805

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 26 2011

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 June 25 10:04 EDT 2022. Contains 354844 sequences. (Running on oeis4.)