A364566 Numbers k such that A364557(k) < A000010(k), where A364557 is the Möbius transform of A005941, and A000010 is Euler totient function phi.

9, 15, 18, 21, 25, 27, 30, 33, 35, 36, 42, 45, 49, 50, 54, 55, 60, 63, 65, 66, 70, 72, 75, 77, 81, 84, 90, 91, 98, 99, 100, 105, 108, 110, 117, 119, 120, 121, 125, 126, 130, 132, 135, 140, 143, 144, 147, 150, 154, 162, 165, 168, 169, 175, 180, 182, 187, 189, 195, 196, 198, 200, 209, 210, 216, 220, 221, 225, 231

Offset: 1

Author

Antti Karttunen, Jul 29 2023

Keywords

• nonn

Crossrefs

Positions of negative terms in A364558.

Cf. A000010, A364557, A364565.

Programs

PARI

A364557(n) = if(1==n, 1, 2^(primepi(vecmax(factor(n)[, 1]))+(bigomega(n)-omega(n))-1));
isA364566(n) = (A364557(n)