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 A260341 #8 Jul 31 2015 04:12:01 %S A260341 1,-2,-1,2,1,2,-2,-2,-2,1,2,3,-2,2,-2,-2,-2,-1,2,2,-2,2,1,2,2,-2,-2,2, %T A260341 -2,-4,1,-2,2,2,2,1,-2,2,2,-2,-2,-2,2,-4,-2,-1,2,2,-2 %N A260341 A002107 with the zero terms omitted. %H A260341 J. W. L. Glaisher, <a href="http://plms.oxfordjournals.org/content/s1-21/1/182.extract">On the square of Euler's series</a>, Proc. London Math. Soc., 21 (1889), 182-194. See Table I. %Y A260341 Cf. A002107. %K A260341 sign %O A260341 0,2 %A A260341 _N. J. A. Sloane_, Jul 30 2015