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 A165369 #6 Nov 23 2016 22:12:32 %S A165369 1,26,650,16250,406250,10156250,253906250,6347656250,158691406250, %T A165369 3967285155925,99182128890000,2479553222047200,61988830546110000, %U A165369 1549720763526000000,38743019084981250000,968575477045312500000 %N A165369 Number of reduced words of length n in Coxeter group on 26 generators S_i with relations (S_i)^2 = (S_i S_j)^9 = I. %C A165369 The initial terms coincide with those of A170745, although the two sequences are eventually different. %C A165369 Computed with MAGMA using commands similar to those used to compute A154638. %H A165369 <a href="/index/Rec#order_09">Index entries for linear recurrences with constant coefficients</a>, signature (24, 24, 24, 24, 24, 24, 24, 24, -300). %F A165369 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 A165369 1)/(300*t^9 - 24*t^8 - 24*t^7 - 24*t^6 - 24*t^5 - 24*t^4 - 24*t^3 - %F A165369 24*t^2 - 24*t + 1) %K A165369 nonn %O A165369 0,2 %A A165369 _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009