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 A291170 #7 Aug 20 2017 09:23:33 %S A291170 1,1,0,0,0,-1,0,0,0,1,0,0,0,-1,1,0,0,1,-2,0,0,-1,3,-1,0,1,-4,3,0,-1,4, %T A291170 -6,1,1,-4,10,-4,-1,4,-13,10,0,-4,15,-20,4,5,-16,32,-14,-5,16,-44,34, %U A291170 1,-17,54,-65,13,19,-60,105,-48,-18,64,-149,113,4,-69,189 %N A291170 Expansion of 1 + x/(1 + x^4/(1 + x^9/(1 + x^16/(1 + x^25/(1 + ... + x^(k^2)/(1 + ...)))))), a continued fraction. %F A291170 Convolution inverse of A285408. %Y A291170 Cf. A003823. %K A291170 sign %O A291170 0,19 %A A291170 _Seiichi Manyama_, Aug 19 2017