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!)
A251217 Number of (n+1)X(6+1) 0..1 arrays with no 2X2 subblock having zero or two 1s 1
631, 5569, 50912, 502971, 4907873, 48781920, 482274751, 4791965557, 47523048960, 471984045011, 4684560331885, 46516009269268, 461786651683295, 4585017470092103, 45520667522670878, 451955910904080413 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A251219
LINKS
FORMULA
Empirical recurrence of order 62 (see link above)
EXAMPLE
Some solutions for n=3
..0..1..0..1..0..1..1....0..1..1..0..1..1..1....1..0..1..1..1..1..0
..1..1..1..1..1..1..1....1..1..1..1..1..1..1....1..1..1..0..1..1..1
..1..0..1..1..1..1..0....1..1..0..1..1..0..1....0..1..1..1..1..1..0
..1..1..1..1..1..0..0....1..0..0..0..1..1..1....1..1..1..0..1..1..1
CROSSREFS
Sequence in context: A105305 A252412 A002227 * A139066 A345557 A345811
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 30 2014
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 29 10:44 EDT 2024. Contains 371268 sequences. (Running on oeis4.)