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

1,2

Comments

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

Links

Table of n, a(n) for n=1..42.

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

Prog

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

Crossrefs

Cf. A000010, A007617, A361058.

Sequence in context: A259388 A049010 A340100 * A021903 A274767 A058315

Adjacent sequences: A361393 A361394 A361395 * A361397 A361398 A361399

Keyword

nonn

Author

Michel Marcus, Mar 10 2023

Status

approved