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%I #10 Dec 27 2022 09:02:27
%S 2,3,5,6,7,9,12,13,15,16,17,21,24,25,29,30,32,34,35,38,40,47,48,52,53,
%T 54,56,57,58,70,73,75,79,84,85,87,94,95,97,98,101,103,108,109,113,114,
%U 117,119,120,121,131,134,136,146,155,157,165,166,167,179,180
%N Partial sums of A108129.
%o (PARI) f(n) = my(k=2*n-1, m=1); while(!isprime(k*2^m-1), m++); m; \\ A108129
%o a(n) = sum(k=1, n, a(k));
%Y Cf. A108129.
%K nonn
%O 1,1
%A _Jorge Coveiro_, Jun 04 2005
%E a(14) and following corrected by _Georg Fischer_, Dec 26 2022
%E Offset 1 from _Michel Marcus_, Dec 26 2022
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