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 A171071 #3 Mar 30 2012 16:51:55 %S A171071 3,7,10,18,21,25,28,47,50,54,57,65,68,72,75,123,126,130,133,141,144, %T A171071 148,151,170,173,177,180,188,191,195,198,322,325,329,332,340,343,347, %U A171071 350,369,372,376,379,387,390,394,397,445,448,452,455,463,466,470,473,492,495,499 %N A171071 A bisection of A178482. %H A171071 Hans Havermann, <a href="/A171071/b171071.txt">Table of n, a(n) for n = 1..12991</a> %Y A171071 Cf. A171070, A178482. %K A171071 nonn %O A171071 1,1 %A A171071 _N. J. A. Sloane_, Sep 05 2010