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%I #16 Oct 17 2014 23:25:35
%S 75,4225,277048,21171189,1709600811,142913828920,12272577818050,
%T 1075207199997332,95673602693282038,8617752113620426557,
%U 783964147695858014234,71904055278788602481892,6640510710493148698166594,616876923984020487671442310
%N Sum of the odd primes <= 2*10^n.
%F Beginning with 3, compute 10^n sums of odds, less odd composites, for each 10^n.
%F a(n) = sum(p: p in A000040, 2<p <=2*10^n). a(n) = A007504(k)-2, where k=A049084[A007917(2*10^n)]. - _R. J. Mathar_, Oct 28 2007
%e a(1)=75 because that is the sum of odds (3+5+7+11+13+17+19=75) less composites (9,15,21) under 10^1 (beginning with 3).
%o (PARI) a(n) = sum(i=3, 2*10^n, i*isprime(i)); \\ _Michel Marcus_, Jun 08 2014
%Y Cf. A134229, A134230.
%K nonn
%O 1,1
%A _Enoch Haga_, Oct 14 2007
%E Better definition from _R. J. Mathar_, Oct 28 2007
%E a(9)-a(14) from _Hiroaki Yamanouchi_, Jul 06 2014
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