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!)
A185797 Number of (n+1) X 9 binary arrays with no 2 X 2 subblock sum equal to any horizontal or vertical neighbor 2 X 2 subblock sum. 1
11220, 20864, 47776, 164576, 433296, 1379208, 3629540, 13289252, 35756268, 128976744, 346446144, 1333284060, 3588481008, 13880081488, 37224984364, 148837476180, 398218723908, 1607711747604, 4285914451420, 17630641010960 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 8 of A185798.
LINKS
EXAMPLE
Some solutions for 3 X 9
..0..0..0..0..0..1..1..0..1....0..1..1..1..0..1..1..0..0
..1..1..0..0..1..1..1..0..0....0..1..0..0..0..1..1..0..1
..1..0..1..0..1..1..0..0..0....0..0..1..0..0..0..0..0..1
CROSSREFS
Cf. A185798.
Sequence in context: A359871 A362446 A271582 * A256355 A135015 A104316
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 04 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 March 28 11:46 EDT 2024. Contains 371241 sequences. (Running on oeis4.)