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 A157493 #9 May 19 2019 14:50:28
%S A157493 4,21,76,218,568,1295,2688,5108,9084,15457,25188,39646,60512,89635,
%T A157493 129224,182088,251708,341805,456868,601938,782344,1004327,1274776,
%U A157493 1601612,1994244,2462873,3018108,3671398,4434624,5320555,6345320
%N A157493 Apply partial sum operator thrice to sequence of squares of the first n primes.
%t A157493 s0=s1=s2=0; Table[s0+=Prime[n]^2; s1+=s0; s2+=s1, {n,100}]
%t A157493 Nest[Accumulate,Prime[Range[40]]^2,3] (* _Harvey P. Dale_, Jan 27 2011 *)
%Y A157493 Cf. A001223, A014148, A014150, A061789, A069482, A129701, A157492.
%K A157493 nonn
%O A157493 1,1
%A A157493 _Vladimir Joseph Stephan Orlovsky_, Mar 01 2009