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

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A169814 a(n) = n XOR phi(n). 3
0, 3, 1, 6, 1, 4, 1, 12, 15, 14, 1, 8, 1, 8, 7, 24, 1, 20, 1, 28, 25, 28, 1, 16, 13, 22, 9, 16, 1, 22, 1, 48, 53, 50, 59, 40, 1, 52, 63, 56, 1, 38, 1, 56, 53, 56, 1, 32, 27, 38, 19, 44, 1, 36, 31, 32, 29, 38, 1, 44, 1, 32, 27, 96, 113, 86, 1, 100, 105, 94, 1, 80, 1, 110, 99, 104, 113, 86 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..78.

MATHEMATICA

Table[BitXor[n, EulerPhi[n]], {n, 80}] (* Harvey P. Dale, Sep 18 2011 *)

PROG

(PARI) a(n)=bitxor(n, eulerphi(n)) \\ Charles R Greathouse IV, Feb 21 2013

CROSSREFS

Cf. A070883, A169810-A169813, A000010.

Sequence in context: A090049 A115364 A016476 * A068436 A019570 A239303

Adjacent sequences:  A169811 A169812 A169813 * A169815 A169816 A169817

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, May 28 2010

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified November 28 09:43 EST 2014. Contains 250310 sequences.