Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A133133
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A133133 a(n) = largest prime factor of sum of largest prime factors of numbers from 2 to n. +0
1
2, 5, 7, 3, 5, 11, 3, 3, 2, 43, 23, 59, 11, 71, 73, 5, 31, 7, 13, 31, 5, 79, 23, 83, 179, 13, 7, 109, 223, 127, 2, 89, 71, 97, 7, 331, 7, 11, 23, 409, 13, 17, 47, 19, 83, 109, 137, 37, 7, 577, 59, 643, 19, 73, 83, 683, 89, 257, 97, 31, 31, 7, 877, 89, 53, 11, 197, 7, 29, 181, 11 (list; graph; listen)
OFFSET

2,1

EXAMPLE

a(11) = gpf(43)=43, a(12) = gpf(46)=23

CROSSREFS

Cf. A088822.

Sequence in context: A095795 A088531 A097964 this_sequence A024710 A140264 A140263

Adjacent sequences: A133130 A133131 A133132 this_sequence A133134 A133135 A133136

KEYWORD

easy,nonn

AUTHOR

Paul Finley (pfinley(AT)touro.edu), Sep 21 2007

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 December 4 15:51 EST 2008. Contains 151308 sequences.


AT&T Labs Research