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 A164992 #6 Nov 23 2016 18:32:14 %S A164992 1,31,930,27900,837000,25110000,753300000,22599000000,677969999535, %T A164992 20339099972100,610172998744965,18305189949807900,549155698118005500, %U A164992 16474670932253220000,494240127628988250000,14827203818711397000000 %N A164992 Number of reduced words of length n in Coxeter group on 31 generators S_i with relations (S_i)^2 = (S_i S_j)^8 = I. %C A164992 The initial terms coincide with those of A170750, although the two sequences are eventually different. %C A164992 Computed with MAGMA using commands similar to those used to compute A154638. %H A164992 <a href="/index/Rec#order_08">Index entries for linear recurrences with constant coefficients</a>, signature (29, 29, 29, 29, 29, 29, 29, -435). %F A164992 G.f. (t^8 + 2*t^7 + 2*t^6 + 2*t^5 + 2*t^4 + 2*t^3 + 2*t^2 + 2*t + 1)/(435*t^8 - %F A164992 29*t^7 - 29*t^6 - 29*t^5 - 29*t^4 - 29*t^3 - 29*t^2 - 29*t + 1) %K A164992 nonn %O A164992 0,2 %A A164992 _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009