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 A066525 #14 Apr 03 2023 10:36:10
%S A066525 503,15803,35287433,106954091,3024050339,3661922443,7223017657,
%T A066525 10412687891,11190761311,12004517137,25886083477,36501131837,
%U A066525 40690306883,47519791211,49942559767,63631102747,84230864741
%N A066525 Primes of form Sum_{k=1..n} prime(k)^3.
%H A066525 Harry J. Smith, <a href="/A066525/b066525.txt">Table of n, a(n) for n = 1..500</a>
%H A066525 G. L. Honaker Jr. and C. Caldwell, <a href="https://t5k.org/curios/page.php?short=503">Prime Curios!</a>
%p A066525 P(n)=sum(k=1,n, prime(k)^3) for(n=1,1000, if(isprime(P(n)),print1(P(n),",")))
%t A066525 Select[Accumulate[Prime[Range[250]]^3],PrimeQ] (* _Harvey P. Dale_, Jan 21 2013 *)
%o A066525 (PARI) { n=0; s=0; for (k=1, 10^10, s+=prime(k)^3; if (isprime(s), write("b066525.txt", n++, " ", s); if (n==500, return)) ) } \\ _Harry J. Smith_, Feb 21 2010
%K A066525 nonn
%O A066525 1,1
%A A066525 _Jason Earls_, Jan 05 2002