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 A162827 #5 Nov 23 2016 15:27:52 %S A162827 1,27,702,17901,456300,11626875,296261550,7548913125,192350632500, %T A162827 4901203636875,124885459968750,3182152634578125,81083061181687500, %U A162827 2066042570916796875,52643941196224218750,1341397599294476953125 %N A162827 Number of reduced words of length n in Coxeter group on 27 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I. %C A162827 The initial terms coincide with those of A170746, although the two sequences are eventually different. %C A162827 Computed with MAGMA using commands similar to those used to compute A154638. %H A162827 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (25, 25, -325). %F A162827 G.f.: (t^3 + 2*t^2 + 2*t + 1)/(325*t^3 - 25*t^2 - 25*t + 1) %K A162827 nonn %O A162827 0,2 %A A162827 _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009