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Elements n of A194234 for which the cototient(n) is not a prime power (A000961).
0

%I #15 Feb 11 2019 08:45:27

%S 45,75,99,153,175,245,261,325,363,369,475,531,539,637,639,833,845,847,

%T 867,909,925,963,1075,1127,1183,1233,1341,1519,1573,1611,1675,1719,

%U 1773,1805,1813,1859,1975,2009,2023,2043,2151,2299,2303

%N Elements n of A194234 for which the cototient(n) is not a prime power (A000961).

%K nonn,easy

%O 1,1

%A _Naohiro Nomoto_, Oct 12 2011