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!)
A112747 Smallest prime of the form 2 followed by n copies of k. 0
23, 211, 2111, 23333, 22121212121, 2999999, 29999999, 21313131313131313, 2777777777, 23333333333, 23333333333333333333333, 2111111111111, 2201201201201201201201201201201201201201, 23131313131313131313131313131 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
a(3) = 2111, 2 followed by three copies of 1.
CROSSREFS
Sequence in context: A165243 A142374 A171342 * A201831 A027481 A201211
KEYWORD
base,nonn,dumb
AUTHOR
Amarnath Murthy, Jan 02 2006
EXTENSIONS
More terms from Jon E. Schoenfield, May 27 2010
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 April 16 17:36 EDT 2024. Contains 371749 sequences. (Running on oeis4.)