Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A066064
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A066064 a(n) = pq in decimal notation where p = prime(n) and q is the smallest prime (A066065(n)) such that p.q is a prime. +0
2
23, 37, 53, 73, 113, 137, 173, 193, 233, 293, 313, 373, 4111, 433, 4723, 5323, 593, 613, 673, 7129, 733, 797, 8311, 8923, 977, 1013, 1033, 10711, 1093, 11311, 1277, 13147, 1373, 13913, 1493, 15131, 15731, 1637, 16729, 1733, 17911, 18119, 1913 (list; graph; listen)
OFFSET

1,1

EXAMPLE

A000040(2) = 3 and as 32, 33, and 35 are composite, the next prime 7 = A066065(2) yields a(2) = 37.

CROSSREFS

Sequence in context: A019549 A129800 A105184 this_sequence A092622 A129351 A124888

Adjacent sequences: A066061 A066062 A066063 this_sequence A066065 A066066 A066067

KEYWORD

base,nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), Dec 01 2001

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