Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A015870
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A015870 phi(n + 4) | sigma(n) + 4. +0
1
6, 11, 12, 62, 65, 166, 251, 782, 2342, 6662, 25040, 83623931, 933180002, 943169410, 1840122962 (list; graph; listen)
OFFSET

1,1

EXAMPLE

phi(6+4)=4, which divides 16=sigma(6)+4, so 6 is a member of the sequence.

CROSSREFS

Cf. A000010, A000203.

Sequence in context: A134012 A103704 A135998 this_sequence A004471 A175021 A046953

Adjacent sequences: A015867 A015868 A015869 this_sequence A015871 A015872 A015873

KEYWORD

nonn,easy

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com)

EXTENSIONS

There are no other terms < 4290000000 - Jud McCranie

Jud McCranie (j.mccranie(AT)comcast.net), Dec 26 1999

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 17 23:40 EST 2009. Contains 171025 sequences.


AT&T Labs Research