This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A123376 #9 Dec 10 2024 08:58:42
%S A123376 28,129,1371,7141,68341,163541,624211,1086557,2756043,8546951,
%T A123376 11791577,28122767,46308119,58262037,88870153,158512433,263952799,
%U A123376 308206649,480993245,635060975,724715753,1053143991,1331063769,1845563079,2750645663,3325653577,3650662901,4369224195,4767074983,5637335441
%N A123376 Sum of the first s(n) primes, where s(n) is the sum of the first p(n) primes, where p(n) is the n-th prime. Note that s(n) is A022094.
%e A123376 a(1)=28=2+3+5+7+11, since s(1)=5=2+3, since p(1)=2.
%p A123376 for j from 1 to 23 do s[j]:=sum(ithprime(i), i=1..ithprime(j)); od; for j from 1 to 23 do sum(ithprime(i), i=1..s[j]); od;
%t A123376 With[{prs=Prime[Range[50000]]},Table[Total[Take[prs,Total[Take[prs, prs[[n]]]]]],{n,30}]] (* _Harvey P. Dale_, May 16 2012 *)
%Y A123376 Cf. A119411, A022094.
%K A123376 easy,nonn
%O A123376 1,1
%A A123376 Peter C. Heinig (algorithms(AT)gmx.de), Oct 13 2006
%E A123376 More terms from _Robert Israel_, Jul 30 2020