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A104194 a(n) = phi(n) - CarmichaelLambda(n). 2
0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 0, 4, 4, 0, 0, 0, 4, 6, 0, 0, 6, 0, 0, 0, 6, 0, 4, 0, 8, 10, 0, 12, 6, 0, 0, 12, 12, 0, 6, 0, 10, 12, 0, 0, 12, 0, 0, 16, 12, 0, 0, 20, 18, 18, 0, 0, 12, 0, 0, 30, 16, 36, 10, 0, 16, 22, 12, 0, 18, 0, 0, 20, 18, 30, 12, 0, 28, 0, 0, 0, 18, 48, 0, 28, 30, 0, 12 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,8

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = A000010(n) - A002322(n). - Michel Marcus, Mar 18 2016

MATHEMATICA

Table[EulerPhi[n] - CarmichaelLambda[n], {n, 1, 200}]

PROG

(PARI) a(n) = eulerphi(n) - lcm(znstar(n)[2]); \\ Michel Marcus, Mar 18 2016

CROSSREFS

Cf. A000010, A002322, A034380.

Sequence in context: A047753 A303947 A031123 * A292261 A035153 A069847

Adjacent sequences:  A104191 A104192 A104193 * A104195 A104196 A104197

KEYWORD

nonn

AUTHOR

Roger L. Bagula, Mar 12 2005

STATUS

approved

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Last modified December 3 05:05 EST 2021. Contains 349445 sequences. (Running on oeis4.)