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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A067244 Numbers n such that phi(n) divides (sigma(n+1)+sigma(n-1)). 0
2, 3, 4, 6, 32, 34, 54, 55, 58, 70, 84, 133, 141, 221, 285, 322, 377, 407, 472, 664, 684, 988, 1149, 1241, 1505, 1911, 1978, 2230, 2590, 2631, 2906, 2912, 3498, 6111, 6579, 7232, 8559, 11194, 13181, 13952, 15323, 15409, 15564, 17362, 18215, 18754, 22328 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

CROSSREFS

Sequence in context: A115035 A065199 A033179 * A084811 A051856 A135236

Adjacent sequences:  A067241 A067242 A067243 * A067245 A067246 A067247

KEYWORD

easy,nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 20 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 17:35 EST 2012. Contains 206061 sequences.