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 A162743 #5 Nov 23 2016 15:15:41 %S A162743 1,6,30,135,600,2640,11610,51000,224040,984060,4322400,18985440, %T A162743 83390760,366280800,1608831840,7066542960,31038691200,136332618240, %U A162743 598819808160,2630222793600,11552844224640,50744069991360 %N A162743 Number of reduced words of length n in Coxeter group on 6 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I. %C A162743 The initial terms coincide with those of A003948, although the two sequences are eventually different. %C A162743 Computed with MAGMA using commands similar to those used to compute A154638. %H A162743 <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (4, 4, -10). %F A162743 G.f.: (t^3 + 2*t^2 + 2*t + 1)/(10*t^3 - 4*t^2 - 4*t + 1) %K A162743 nonn %O A162743 0,2 %A A162743 _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009