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!)
A090761 Numbers n which occur at least three times in A001600. 1
27, 49, 51, 53, 89, 91, 96, 97, 101, 168, 169, 176, 181, 184, 188, 189, 191, 195, 240, 264, 285 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
REFERENCES
T. Goto and S. Shibata, All numbers whose positive divisors have integral harmonic mean up to 300, Math. Comput. 73 (2004), 475-491.
LINKS
CROSSREFS
Sequence in context: A155137 A155138 A031325 * A090760 A251143 A109067
KEYWORD
nonn,more
AUTHOR
R. K. Guy, Feb 08 2004
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 March 29 11:14 EDT 2024. Contains 371278 sequences. (Running on oeis4.)