%I A131558
%S A131558 2,24133,870530414842019,11138479445180240497
%N A131558 Primes which are the sum of the first 10^k primes for some k.
%C A131558 Also numbers n such that A099824(n) is prime.
%e A131558 The sum of the first 10^1 primes is 129 which is not prime and not in 
               the sequence. The sum of the first 10^9 primes is 11138479445180240497 
               which is prime and in the sequence.
%Y A131558 Cf. A099824.
%Y A131558 Sequence in context: A124364 A123692 A132942 this_sequence A133857 A153912 
               A047076
%Y A131558 Adjacent sequences: A131555 A131556 A131557 this_sequence A131559 A131560 
               A131561
%K A131558 more,nonn,less
%O A131558 1,1
%A A131558 Cino Hilliard (hillcino368(AT)hotmail.com), Aug 27 2007