%I #10 May 16 2013 11:38:23
%S 1,2,3,9,13,54,384,596,7289,18136,226871,1577601,5240465,13389981,
%T 130707763,157598052,617834651,998713177,4596574856
%N Numbers n such that the sum of first n nontrivial prime powers (A025475 excluding 1) is divisible by n.
%C a(16) > 146306912. There are 146306912 nontrivial prime powers <= 2^63. - _Donovan Johnson_, May 16 2013
%C a(20) > 41.2*10^9. - _Giovanni Resta_, May 16 2013
%e The sum of first 9 nontrivial prime powers is 4 + 8 + 9 + 16 + 25 + 27 + 32 + 49 + 64 = 234. Because 234 is divisible by 9, the latter is in the sequence.
%Y Cf. A025475, A225791.
%K nonn,more
%O 1,2
%A _Alex Ratushnyak_, May 16 2013
%E a(12)-a(15) from _Donovan Johnson_, May 16 2013
%E a(16)-a(19) from _Giovanni Resta_, May 16 2013
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