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 A109272 #3 Mar 30 2012 17:26:17
%S A109272 1,8,24,25,2,-2,0,-2,1,-3,3,-6,9,-19,35,-70,140,-289,603,-1283,2763,
%T A109272 -6031,13307,-29660,66710,-151297,345755,-795695,1842994,-4294316,
%U A109272 10061643,-23696379,56076739,-133301692,318212959,-762636889,1834568152,-4428667929,10726314536,-26060812015,63505805734
%N A109272 Floor of expansion (1+e*x)^Pi.
%C A109272 Cf. A109271.
%t A109272 ns=Normal[With[{m=50}, s=Series[(1+E x)^Pi, {x, 0, m}]]]; A109272=Floor[ CoefficientList[ns, x]]
%Y A109272 Cf. A109271.
%K A109272 sign
%O A109272 1,2
%A A109272 _Zak Seidov_, Jun 24 2005