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A169814 a(n) = n XOR phi(n). 4
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

Amiram Eldar, Table of n, a(n) for n = 1..10000

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. A000010, A070883, A169810, A169811, A169812, A169813.

Sequence in context: A016476 A293436 A293228 * A068436 A019570 A239303

Adjacent sequences:  A169811 A169812 A169813 * A169815 A169816 A169817

KEYWORD

nonn,changed

AUTHOR

N. J. A. Sloane, May 28 2010

STATUS

approved

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Last modified July 20 01:17 EDT 2019. Contains 325168 sequences. (Running on oeis4.)