A071624 Numbers k such that phi(m) = 96*k+2 has no solution.

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

Offset: 1

Author

Labos Elemer, May 29 2002

Keywords

• nonn

Crossrefs

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

Programs

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}]

Extensions

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