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A060473 a(n) = numerator of phi(n)/(n+1), where phi(n) is Euler's phi, A000010. 3
1, 1, 1, 2, 2, 2, 3, 4, 3, 4, 5, 4, 6, 2, 1, 8, 8, 6, 9, 8, 6, 10, 11, 8, 10, 4, 9, 12, 14, 8, 15, 16, 10, 16, 2, 12, 18, 6, 3, 16, 20, 12, 21, 4, 12, 22, 23, 16, 21, 20, 8, 24, 26, 18, 5, 8, 18, 28, 29, 16, 30, 10, 9, 32, 8, 20, 33, 32, 22, 24, 35, 24, 36, 12, 10, 36, 10, 24, 39, 32, 27, 40, 41 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

a(A203966(n)) = 1. - Robert G. Wilson v, Jul 05 2014

LINKS

T. D. Noe, Table of n, a(n) for n=1..1000

EXAMPLE

a(7) = 3 because phi(7)/(7+1) = 6/8 = 3/4.

MAPLE

with(numtheory, phi): seq(numer(phi(n)/(n+1)), n=1..50);

MATHEMATICA

Numerator/@Table[EulerPhi[n]/(n+1), {n, 90}] (* Harvey P. Dale, May 11 2011 *)

PROG

(PARI) { for (n=1, 1000, write("b060473.txt", n, " ", numerator(eulerphi(n)/(n + 1))); ) } \\ Harry J. Smith, Jul 05 2009

CROSSREFS

Cf. A000010, A060474.

Sequence in context: A016729 A155940 A186963 * A055034 A112184 A112213

Adjacent sequences:  A060470 A060471 A060472 * A060474 A060475 A060476

KEYWORD

easy,frac,nice,nonn

AUTHOR

Fabian Rothelius, Mar 16 2001

EXTENSIONS

More terms from Asher Natan Auel (auela(AT)reed.edu), Mar 16 2001

STATUS

approved

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Last modified November 19 08:44 EST 2019. Contains 329318 sequences. (Running on oeis4.)