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 A174627 #2 Mar 30 2012 18:40:51 %S A174627 0,1,3,11,55,545,14619,1363847 %N A174627 Partial sums of A002833. %C A174627 Partial sums of threshold functions of n variables. The subsequence of primes in this partial sum begins: 3, 11, 1363847. %F A174627 a(n) = SUM[i=0..n] A002833(i). %e A174627 a(7) = 0 + 1 + 2 + 8 + 44 + 490 + 14074 + 1349228 = 1363847 is prime. %Y A174627 Cf. A002833. %K A174627 more,nonn %O A174627 0,3 %A A174627 _Jonathan Vos Post_, Mar 24 2010