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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A071382 Numbers n such that (30^n+1)/31 is a prime. 2
139, 173, 547, 829, 2087, 2719, 3109, 10159 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Some of the larger terms may only correspond to probable primes.

LINKS

H. Dubner and T. Granlund, Primes of the Form (b^n+1)/(b+1), J. Integer Sequences, 3 (2000), #P00.2.7.

H. Lifchitz, Mersenne and Fermat primes field

CROSSREFS

Cf. A071381.

Sequence in context: A047652 A020357 A050967 * A031928 A095649 A142524

Adjacent sequences:  A071379 A071380 A071381 * A071383 A071384 A071385

KEYWORD

nonn

AUTHOR

Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 22 2002

EXTENSIONS

10159 from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 05 2008

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 17 18:41 EST 2012. Contains 206074 sequences.