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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A140383 Prime triplets of the form p, 2^p -1, 2^(2^p)+1 derived from a single prime p. 0
2, 3, 17, 3, 7, 257 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

List is probably complete (see comments in A000215, A019434).

EXAMPLE

(2,3,17) is a triple of 3 primes 2, 2^2-1, 2^4+1.

CROSSREFS

Cf. A000040, A000043, A000668, A000215.

Sequence in context: A005273 A171990 A103898 * A029913 A029914 A073125

Adjacent sequences:  A140380 A140381 A140382 * A140384 A140385 A140386

KEYWORD

nonn,less

AUTHOR

Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Jun 14 2008

EXTENSIONS

Edited by R. J. Mathar, Jun 16 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 13 15:24 EST 2012. Contains 205519 sequences.