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

 

Logo

Many excellent designs for a new banner were submitted. We will use the best of them in rotation.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A078686 Primes of unknown form. 1
5, 31, 67, 89, 101, 283, 503, 1039, 1129, 2069, 3457, 5641 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The original definition ("Primes p such that the minimum value of |p-2^x|, x>0, is also a prime") produces A188677, not the terms shown here. Unfortunately, Benoit Cloitre cannot now recall what the original definition should have been. This sequence is at present a mystery. - N. J. A. Sloane, Apr 01 2011.

LINKS

Table of n, a(n) for n=1..12.

CROSSREFS

Sequence in context: A238674 A147033 A125743 * A031908 A139862 A102732

Adjacent sequences:  A078683 A078684 A078685 * A078687 A078688 A078689

KEYWORD

nonn,unkn

AUTHOR

Benoit Cloitre, Dec 17 2002

STATUS

approved

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

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

Last modified April 24 04:20 EDT 2014. Contains 240947 sequences.