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!)
A186794 Half the number of (n+2)X9 binary arrays with each 3X3 subblock having a sum in 2..7 1
53808589, 23402344941, 10131963654512, 4391582264258067, 1903184045712789082, 824819184923132441809, 357466055151669297136736, 154921287528965130422293553, 67140931189826904910835734315 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A186796

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..19

EXAMPLE

Some solutions for 4X9 with a(1,1)=0

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

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

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

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

CROSSREFS

Sequence in context: A186596 A205180 A216007 * A345719 A346360 A234794

Adjacent sequences:  A186791 A186792 A186793 * A186795 A186796 A186797

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 May 20 13:32 EDT 2022. Contains 353873 sequences. (Running on oeis4.)