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 A157494 #6 Jul 11 2025 13:36:55
%S A157494 2,1429,32869,3189059,5157791,62701339,139181423,296686879,522304883,
%T A157494 5070516751,6276844867,7098350179,8983996079,9331926623,21211375343,
%U A157494 31177858939,34861039007,38865340309,39918757589,62858815181
%N A157494 Primes in A014150.
%t A157494 s0=s1=s2=0;lst={};Do[p=Prime[n];s0+=p;s1+=s0;s2+=s1;If[PrimeQ[s2],AppendTo[lst,s2]],{n,7!}];lst
%t A157494 Select[Nest[Accumulate[#]&,Prime[Range[700]],3],PrimeQ] (* _Harvey P. Dale_, Jul 11 2025 *)
%Y A157494 Cf. A001223, A014148, A014150, A061789, A069482, A122382, A129701, A157492, A157493
%K A157494 nonn
%O A157494 1,1
%A A157494 _Vladimir Joseph Stephan Orlovsky_, Mar 01 2009