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 A173765 #2 Mar 30 2012 18:40:51 %S A173765 1,3,7,18,46,124,337,935,2605,7328,20684,58670,166863,476032,1360955, %T A173765 3899324,11191494,32173714,92625281,267010344,770610783,2226438062, %U A173765 6438902174,18638275524,53995855636,156548609636,454200201824 %N A173765 Partial sums of A005200. %C A173765 x. The subsequence of primes in this partial sum begins: 3, 7, 337, 121208284196421093429539251 = a(58). %F A173765 a(n) = SUM[i=1..n] A005200(i). %e A173765 a(28) = 1 + 2 + 4 + 11 + 28 + 78 + 213 + 598 + 1670 + 4723 + 13356 + 37986 + 108193 + 309169 + 884923 + 2538369 + 7292170 + 20982220 + 60451567 + 174385063 + 503600439 + 1455827279 + 4212464112 + 12199373350 + 35357580112 + 102552754000 + 297651592188 + 86446068277. %Y A173765 Cf. A005200, A000081, A005201, A000055. %K A173765 easy,nonn %O A173765 1,2 %A A173765 _Jonathan Vos Post_, Feb 24 2010