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 A145639 #4 Mar 31 2012 10:22:14
%S A145639 264,203020,86622136,155226869062,357642706328312,1007121861020611852,
%T A145639 3351701553476597181976,858035597690008879399669,
%U A145639 1244723640382306214386523896,1210867157363907485355224291060
%N A145639 Numerator of the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=16.
%C A145639 For denominators see A145640. For general properties of A_l(x) see A145609.
%t A145639 m = 16; 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 A145639 Cf. A145609 - A145640.
%K A145639 frac,nonn
%O A145639 1,1
%A A145639 _Artur Jasinski_, Oct 14 2008
%E A145639 Edited by _R. J. Mathar_, Aug 21 2009