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A071624 Numbers n such that the set InvPhi[96n+2] is nonempty. 0
0, 378, 1524, 2385, 7749, 13788, 21555, 34599, 46398, 50715, 59925, 69903, 75180, 86310, 104445, 117495, 177375, 230349, 239850, 269505, 290235, 311733, 380835, 393024, 470190, 497448, 525474, 583830, 598899, 743160, 760149, 812268, 902973, 998478, 1018155 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..35.

MAPLE

[seq(nops(invphi(2+96*i)), i=1..25000)];

MATHEMATICA

s=0; m=96; r=2; Do[s=EulerPhi[n]; If[Equal[Mod[s, m], r], Print[(s-r)/m]], {n, 1, 100000000}]

CROSSREFS

Cf. A063667, A063668, A000010, A005277, A002202.

Sequence in context: A065702 A132648 A157116 * A058041 A224337 A239174

Adjacent sequences:  A071621 A071622 A071623 * A071625 A071626 A071627

KEYWORD

nonn

AUTHOR

Labos Elemer, May 29 2002

EXTENSIONS

a(20)-a(35) from Donovan Johnson, Jul 27 2011

STATUS

approved

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Last modified September 20 01:58 EDT 2019. Contains 327207 sequences. (Running on oeis4.)