Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A143794
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A143794 Primes of the form : prime(n)-n=prime, prime(n)+n=prime. +0
1
7, 13, 61, 181, 317, 827, 1831, 2657, 2801, 3181, 3739, 4093, 4561, 5011, 5443, 5531, 5653, 6359, 6659, 9029, 10729, 11383, 13109, 13907, 14489, 15217, 15859, 16603, 17581, 20393, 21499, 23537, 25037, 25169, 26153, 26959, 27077, 27803, 27851 (list; graph; listen)
OFFSET

1,1

EXAMPLE

7-4=3,7+4=11; 13-6=7,13+6=19; 61-18=43,61+18=79.

MATHEMATICA

lst={}; Do[p=Prime[n]; If[PrimeQ[p-n]&&PrimeQ[p+n], AppendTo[lst, p]], {n, 8!}]; lst

CROSSREFS

Adjacent sequences: A143791 A143792 A143793 this_sequence A143795 A143796 A143797

Sequence in context: A015441 A091005 A133664 this_sequence A106976 A098478 A061521

KEYWORD

nonn

AUTHOR

Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 01 2008

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 November 8 07:45 EST 2009. Contains 166143 sequences.


AT&T Labs Research