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 A165364 #6 Nov 23 2016 22:11:24 %S A165364 1,22,462,9702,203742,4278582,89850222,1886854662,39623947902, %T A165364 832102905711,17474161015080,366957381215040,7706105003381400, %U A165364 161828205026186160,3398392304608621320,71366238377013998880 %N A165364 Number of reduced words of length n in Coxeter group on 22 generators S_i with relations (S_i)^2 = (S_i S_j)^9 = I. %C A165364 The initial terms coincide with those of A170741, although the two sequences are eventually different. %C A165364 Computed with MAGMA using commands similar to those used to compute A154638. %H A165364 <a href="/index/Rec#order_09">Index entries for linear recurrences with constant coefficients</a>, signature (20, 20, 20, 20, 20, 20, 20, 20, -210). %F A165364 G.f. (t^9 + 2*t^8 + 2*t^7 + 2*t^6 + 2*t^5 + 2*t^4 + 2*t^3 + 2*t^2 + 2*t + %F A165364 1)/(210*t^9 - 20*t^8 - 20*t^7 - 20*t^6 - 20*t^5 - 20*t^4 - 20*t^3 - %F A165364 20*t^2 - 20*t + 1) %K A165364 nonn %O A165364 0,2 %A A165364 _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009