Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A147599
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A147599 a(n)=sigma_0(sigma_1(n)). Also a(n)=A000005(A000203(n)). +0
1
1, 2, 2, 2, 4, 6, 4, 4, 2, 6, 6, 6, 4, 8, 2, 6, 4, 6, 8 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Cf. A000005, A000203

Sequence in context: A082547 A068928 A152968 this_sequence A086420 A103265 A008238

Adjacent sequences: A147596 A147597 A147598 this_sequence A147600 A147601 A147602

KEYWORD

easy,nonn

AUTHOR

Ctibor O. Zizka (c.zizka(AT)email.cz), Nov 08 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 December 4 23:11 EST 2009. Contains 170347 sequences.

AT&T Labs Research

Legal Notice
© 2009 AT&T Intellectual Property. All Rights Reserved.