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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A067235 Numbers n such that phi(4n-1)=sigma(n). 0
660, 744, 4216, 6460, 10780, 11880, 14688, 27820, 32524, 37464, 40120, 59964, 87124, 110770, 120934, 125764, 184264, 190564, 194584, 210324, 264280, 269514, 295144, 297388, 298840, 314974, 379204, 384750, 396256, 396520, 406296, 444244, 473524, 597480 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

Are there any odd terms in the sequence?

CROSSREFS

Sequence in context: A198207 A171393 A023294 * A113171 A014362 A143042

Adjacent sequences:  A067232 A067233 A067234 * A067236 A067237 A067238

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 20 2002

EXTENSIONS

More terms from Harvey P. Dale (hpd1(AT)nyu.edu), Feb 26 2002

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 17 02:30 EST 2012. Contains 205978 sequences.