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 A122209 #4 Dec 21 2014 12:33:15
%S A122209 4,87,1556,13275,65796,239087,710844,1789395,4083404,8384727,16156884,
%T A122209 29194283,50363460,82888311,132264452,204330315,306450780,450504551,
%U A122209 647579748,913503459,1262033828,1725350295,2318488092,3072687971
%N A122209 Sum of squares of the first n^2 primes = A024450[n^2].
%C A122209 Prime a(n) are listed in A122210[n] = {239087,29194283,13459558559,2330212120559,591302115428891,...}. Corresponding numbers n such that a(n) is a prime are listed in A122211[n] = {6,12,30,66,156,180,228,336,366,...}.
%F A122209 a(n) = Sum[ Prime[k]^2, {k,1,n^2} ]. a(n) = A024450[n^2].
%t A122209 Table[Sum[Prime[k]^2,{k,1,n^2}],{n,1,50}]
%t A122209 Module[{nn=600,t},t=Accumulate[Prime[Range[nn]]^2];Table[t[[i]],{i,Range[ Floor[ Sqrt[nn]]]^2}]] (* _Harvey P. Dale_, Dec 21 2014 *)
%Y A122209 Cf. A122210, A122211, A024450, A098561, A098562.
%K A122209 nonn
%O A122209 1,1
%A A122209 _Alexander Adamchuk_, Aug 25 2006