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 A186028 #10 May 16 2020 10:20:51 %S A186028 1,1,1,1,1,1,1,1,1,1,3,3,1,1,1,1,1,1,1,1,3,3,5,5,1,1,17,17,1,1,15,15, %T A186028 1,1,13,13,3,3,19,19,9,9,37,37,75,75,113,113,1,1,111,111,289,289,467, %U A186028 467,1,1,31,31,15,15 %N A186028 Denominators of coefficients of x^2 in continued fraction expansion of A106400. %C A186028 Corresponding numerators are A186027. %H A186028 Guo-Niu Han, <a href="https://doi.org/10.1016/j.jnt.2014.07.022">Hankel determinant calculus for the Thue-Morse and related sequences</a>, Journal of Number Theory, Volume 147, February 2015, Pages 374-395. See vn p. 376. %Y A186028 Cf. A186026, A186027. %K A186028 nonn %O A186028 0,11 %A A186028 _Paul Barry_, Feb 10 2011 %E A186028 a(0)=1 inserted by _Michel Marcus_, May 16 2020