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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A055743 EulerPhi(n) has fewer prime divisors than n. 0
2, 6, 10, 12, 15, 20, 24, 30, 34, 40, 42, 48, 51, 60, 66, 68, 70, 78, 80, 84, 85, 90, 96, 102, 105, 110, 114, 120, 126, 130, 132, 136, 138, 140, 150, 156, 160, 165, 168, 170, 174, 180, 182, 190, 192, 195, 204, 210, 220, 222, 228, 230, 234, 238, 240, 246, 252 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

EXAMPLE

n=996 has 3 prime divisors:2,3 and 83, while Phi(996)=328=2.2.2.41 has only 2 factors.

CROSSREFS

A001221, A000010.

Sequence in context: A095300 A097381 A195064 * A189680 A189395 A190003

Adjacent sequences:  A055740 A055741 A055742 * A055744 A055745 A055746

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Jul 11 2000

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 14 23:53 EST 2012. Contains 205689 sequences.