login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A136133 Integer log of harmonic numbers. 1
0, 1, 6, 3, 125, 5, 9, 743, 7105, 59, 925, 500, 943, 2118, 41214, 8415, 1138949, 39515, 7440381, 11166954, 18857978, 254, 584522, 467664, 312408461, 34395742156, 218280, 375035124, 4990290103, 28025, 2667653736605, 913550, 199539368422 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
The integer log of a fraction p/q is A001414(p) - A001414(q).
Similar to A136121 or A136122: apply integer log (sopfr, or A001414) to the fractions in the harmonic numbers sequence (A001008/A002805).
LINKS
MATHEMATICA
sopfr = Function[x, Plus @@ Map[Times @@ # &, FactorInteger[x]]]; sopfr /@ HarmonicNumber[Range[40]]
CROSSREFS
Sequence in context: A100979 A279107 A266661 * A200020 A011487 A242834
KEYWORD
easy,nonn
AUTHOR
Carlos Alves, Dec 16 2007
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 23 07:34 EDT 2024. Contains 374546 sequences. (Running on oeis4.)