login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A088847 a(n)=sigma[A087979(n)/phi[n]] or 0 if A087979(n) is not a balanced number. 0
1, 1, 3, 4, 4, 6, 6, 8, 9, 8, 10, 12, 12, 14, 15, 16, 16, 18, 18, 20, 21, 20, 22 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

EXAMPLE

While A088830 includes special balanced numbers, A087979 does not include per definitionem. Nevertheless, it seems that A087979 consists only of balanced numbers. This is provable at least for special cases.

CROSSREFS

Cf. A087979, A020492, A088830.

Sequence in context: A111234 A014683 A166737 * A120613 A164326 A117571

Adjacent sequences:  A088844 A088845 A088846 * A088848 A088849 A088850

KEYWORD

more,nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Nov 17 2003

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 15 16:28 EST 2012. Contains 205823 sequences.