A075659 - OEIS

%I #10 Sep 09 2017 12:01:26

%S 14,15,28,39,45,46,55,56,66,75,87,92,94,98,112,117,132,135,155,158,

%T 183,184,186,188,196,198,203,224,225,247,255,261,264,275,285,290,291,

%U 295,299,316,322,323,334,351,354,357,368,372,375,376,392,396,405,418,429

%N Sum of prime divisors (A008472) is a power of an integer with exponent greater than 1.

%H Michel Marcus, <a href="/A075659/b075659.txt">Table of n, a(n) for n = 1..5000</a>

%o (PARI) isok(n) = {my(f=factor(n)); ispower(sum(k=1, #f~, f[k,1]));} \\ _Michel Marcus_, Sep 09 2017

%Y Cf. A008472, A001597.

%K nonn

%O 1,1

%A _Floor van Lamoen_, Sep 23 2002

%E More terms from _Matthew Conroy_, Oct 15 2002

%E Offset corrected by _Michel Marcus_, Sep 09 2017