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 A145633 #4 Mar 31 2012 10:22:14
%S A145633 351,356629,100451221,237667596101,361492413720217,672014397106339313,
%T A145633 113570433110971729997,7677361278301689081731,
%U A145633 7352352984186917577941057,118042027161120961713900643051,6649700863409814176549753413113
%N A145633 Numerator of the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=13.
%C A145633 For denominators see A145634. For general properties of A_l(x) see A145609.
%t A145633 m = 13; aa = {}; Do[k = 0; Do[k = k + m^(2 r + 1 - d)/d, {d, 1, 2 r}]; AppendTo[aa, Numerator[k]], {r, 1, 25}]; aa (*Artur Jasinski*)
%Y A145633 Cf. A145609 - A145640.
%K A145633 frac,nonn
%O A145633 1,1
%A A145633 _Artur Jasinski_, Oct 14 2008
%E A145633 Edited by _R. J. Mathar_, Aug 21 2009