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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A167746 Number of prime divisors of A001222. 2
1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 2, 0, 1, 0, 1, 1, 1, 0, 2, 1, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 2, 0, 1, 1, 2, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 2, 1, 2, 1, 1, 0, 2, 0, 1, 1, 2, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 1, 1, 1, 1, 0, 1, 2, 1, 0, 2, 1, 1, 1, 2, 0, 2, 1, 1, 1, 1, 1, 2, 0, 1, 1, 2, 0, 1, 0, 2, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,16

COMMENTS

First 31 terms the same as A050370.

LINKS

Table of n, a(n) for n=1..105.

MATHEMATICA

Array[Plus@@Last/@FactorInteger[Plus@@Last/@FactorInteger[ # ]]&, 2*5! ]

CROSSREFS

Sequence in context: A090465 A052344 A147768 * A050370 A050374 A047886

Adjacent sequences:  A167743 A167744 A167745 * A167747 A167748 A167749

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Nov 10 2009

STATUS

approved

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 May 20 09:52 EDT 2013. Contains 225458 sequences.