Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A087714
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A087714 Primes p = prime(i) such that p(i)# - p(i+1) and p(i)# + p(i+1) are both primes, where p# = A002110. +0
7
5, 13, 19, 367 (list; graph; listen)
OFFSET

1,1

COMMENT

Conjecture: there are only 4 primes in this sequence.

EXAMPLE

2*3*5-7 = 23 is prime, 2*3*5+7 = 37 is prime

CROSSREFS

Cf. A087715, A087716, A087728.

Sequence in context: A045454 A082093 A045455 this_sequence A055045 A030374 A007675

Adjacent sequences: A087711 A087712 A087713 this_sequence A087715 A087716 A087717

KEYWORD

nonn

AUTHOR

Pierre CAMI (colettecami(AT)aol.com), Sep 28 2003

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


AT&T Labs Research