A361396 Integers k such that 28*phi(29*197^3*k) is not a totient number where phi is the totient function.

1, 2, 3, 4, 6, 7517, 15034, 18059, 22551, 28019, 30068, 30983, 36118, 45102, 56038, 61966, 65267, 67427, 67499, 71387, 84057, 84947, 90677, 92949, 97187, 112076, 115469, 123932, 127487, 130534, 130787, 134854, 134998, 142774, 168114, 169067, 169894, 181354, 185898, 191579, 194374, 195801

Offset: 1

Author

Michel Marcus, Mar 10 2023

Keywords

• nonn

Comments

For k=1, A000010(29*197^3) = 212983792 = A361058(28).

Links

• Math Overflow, The range of the Euler totient function and multiplication by 28, 2018.

Crossrefs

Cf. A000010, A007617, A361058.

Programs

PARI

isok(k) = ! istotient(28*eulerphi(29*197^3*k));