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 A063238 #10 Aug 22 2019 12:18:12
%S A063238 5,14,24,32,42,52,60,70,80,88,98,108,116,126,136,144,154,164,172,182,
%T A063238 192,200,210,220,228,238,248,256,266,276,284,294,304,312,322,332,340,
%U A063238 350,360,368,378,388,396,406,416,424,434,444,452,462
%N A063238 Dimension of the space of weight 2n cuspidal newforms for Gamma_0( 87 ).
%H A063238 William A. Stein, <a href="http://wstein.org/Tables/dimskg0new.gp">Dimensions of the spaces S_k^{new}(Gamma_0(N))</a>
%H A063238 William A. Stein, <a href="http://wstein.org/Tables/">The modular forms database</a>
%H A063238 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (1,0,1,-1).
%F A063238 G.f.: 5x -2*x^2*(-7-5*x-4*x^2+2*x^3) / ( (1+x+x^2)*(x-1)^2 ). - _R. J. Mathar_, Jul 15 2015
%t A063238 LinearRecurrence[{1,0,1,-1},{5,14,24,32,42},50] (* _Harvey P. Dale_, Jun 24 2018 *)
%K A063238 nonn
%O A063238 1,1
%A A063238 _N. J. A. Sloane_, Jul 10 2001