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 A291149 #12 Aug 20 2017 09:23:10 %S A291149 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15, %T A291149 16,17,19,22,26,31,37,44,52,61,71,82,94,107,121,136,152,169,188,210, %U A291149 236,267,304,348,400,461,532,614,708,815,936,1072,1224,1393,1581 %N A291149 Expansion of 1/(1 - x/(1 - x^16/(1 - x^81/(1 - x^256/(1 - x^625/(1 - x^1296/(1 - ... - x^(n^4)/(1 - ...)))))))), a continued fraction. %Y A291149 Column k=4 of A290771. %K A291149 nonn %O A291149 0,18 %A A291149 _Seiichi Manyama_, Aug 19 2017