login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A183810 1/16 the number of (n+1)X9 binary arrays with no 2X2 subblock being a reflection across the shared element pair of any horizontal or vertical neighbor 0
2187, 79605, 2518389, 89998565, 3023598287, 106324742825, 3645190453457, 127200605449247, 4393367308414597 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 8 of A183811

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions with upper left block zero for 3X9

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

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

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

CROSSREFS

Sequence in context: A209509 A016759 A086874 * A224005 A210057 A232029

Adjacent sequences:  A183807 A183808 A183809 * A183811 A183812 A183813

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 07 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 26 10:12 EDT 2019. Contains 324375 sequences. (Running on oeis4.)