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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A093403 Primes of the form 50*R_n + 9, where R_n is the repunit (A002275) of length n. 0
59, 55555559, 555555555559, 555555555555555559, 55555555555555555555555559, 55555555555555555555555555555559, 555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555555559 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Primes of the form (5*10^n+31)/9 [From Vincenzo Librandi, Nov 17 2010]

CROSSREFS

Cf. A056687 (corresponding n).

Sequence in context: A178066 A191947 A188269 * A087535 A058931 A092914

Adjacent sequences:  A093400 A093401 A093402 * A093404 A093405 A093406

KEYWORD

nonn

AUTHOR

Rick L. Shepherd (rshepherd2(AT)hotmail.com), Mar 28 2004

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 15 21:10 EST 2012. Contains 205856 sequences.