Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A062955
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A062955 Phi(n^2)-phi(n). +0
1
0, 1, 4, 6, 16, 10, 36, 28, 48, 36, 100, 44, 144, 78, 112, 120, 256, 102, 324, 152, 240, 210, 484, 184, 480, 300, 468, 324, 784, 232, 900, 496, 640, 528, 816, 420, 1296, 666, 912, 624, 1600, 492, 1764, 860, 1056, 990, 2116, 752, 2016, 980, 1600, 1224, 2704 (list; graph; listen)
OFFSET

1,3

LINKS

Harry J. Smith, Table of n, a(n) for n=1,...,1000

PROGRAM

(PARI) a(n)=if(n<1, 0, eulerphi(n^2)-eulerphi(n))

(PARI) { for (n=1, 1000, write("b062955.txt", n, " ", eulerphi(n^2) - eulerphi(n)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 14 2009]

CROSSREFS

Sequence in context: A129597 A088843 A154784 this_sequence A133092 A056222 A138624

Adjacent sequences: A062952 A062953 A062954 this_sequence A062956 A062957 A062958

KEYWORD

nonn

AUTHOR

Jason Earls (zevi_35711(AT)yahoo.com), Jul 22 2001

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified December 20 16:54 EST 2009. Contains 171081 sequences.


AT&T Labs Research