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 A145638 #4 Mar 31 2012 10:22:14
%S A145638 1,6,15,60,45,990,6435,10296,43758,4157010,2078505,191222460,
%T A145638 239028075,1434168450,20795442525,10314539492400,2578634873100,
%U A145638 1289317436550,23852372576175,95409490304700,977947275623175,84103465703593050
%N A145638 Denominator the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=14.
%C A145638 For numerators see A145635. For general properties of A_l(x) see A145609.
%C A145638 m^(2n)Log[m/(m-1)]-A[1,2n+1](m)
%t A145638 m = 14; aa = {}; Do[k = 0; Do[k = k + m^(2 r + 1 - d)/d, {d, 1, 2 r}]; AppendTo[aa, Denominator[k]], {r, 1, 30}]; aa (*Artur Jasinski*)
%Y A145638 Cf. A145609 - A145640.
%K A145638 frac,nonn
%O A145638 1,2
%A A145638 _Artur Jasinski_, Oct 16 2008
%E A145638 Edited by _R. J. Mathar_, Aug 21 2009