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 A063195 #12 Aug 22 2019 12:18:12
%S A063195 0,1,1,1,1,3,1,3,3,3,3,5,3,5,5,5,5,7,5,7,7,7,7,9,7,9,9,9,9,11,9,11,11,
%T A063195 11,11,13,11,13,13,13,13,15,13,15,15,15,15,17,15,17
%N A063195 Dimension of the space of weight 2n cuspidal newforms for Gamma_0( 6 ).
%H A063195 R. J. Mathar, <a href="/A063195/b063195.txt">Table of n, a(n) for n = 1..1000</a>
%H A063195 G. Martin, <a href="http://dx.doi.org/10.1016/j.jnt.2004.10.009">Dimensions of the spaces of cusp forms and newforms on Gamma_0(N) and Gamma_1(N)</a>, J. Numb. Theory 112 (2005) 298-331, Theorem 1
%H A063195 R. J. Mathar, <a href="/A063195/a063195.mp.txt">Maple source program for A063195 .. A063247</a>
%H A063195 William A. Stein, <a href="http://wstein.org/Tables/dimskg0new.gp">Dimensions of the spaces S_k^{new}(Gamma_0(N))</a>
%H A063195 William A. Stein, <a href="http://wstein.org/Tables/">The modular forms database</a>
%H A063195 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (0,1,1,0,-1).
%F A063195 G.f. x^2*(1+x+x^4-x^3) / ( (1+x)*(1+x+x^2)*(x-1)^2 ). - _R. J. Mathar_, Jul 15 2015
%K A063195 nonn,easy
%O A063195 1,6
%A A063195 _N. J. A. Sloane_, Jul 10 2001