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 A133670 #6 Jun 20 2016 05:13:52 %S A133670 1,2,3,5,7,11,17,27,43,73,125,219,391,707,1293,2389,4437,8293,15579, %T A133670 29377,55593,105533,200859,383221,732757,1403849,2694405,5179939, %U A133670 9973431,19229827,37125563,71762397,138871261,269021849,521666985 %N A133670 Partial sums of A000016. %Y A133670 Cf. A000016. %K A133670 nonn %O A133670 0,2 %A A133670 _Jonathan Vos Post_, Dec 29 2007 %E A133670 Typo in a(25) corrected by _Giovanni Resta_, Jun 20 2016