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 A164688 #10 Feb 25 2024 09:09:30 %S A164688 1,44,1892,81356,3498308,150427244,6468371492,278139973210, %T A164688 11960018807352,514280806967928,22114074624447960,950905205618825688, %U A164688 40888923702614731128,1758223713235658179896,75603619412131966509354 %N A164688 Number of reduced words of length n in Coxeter group on 44 generators S_i with relations (S_i)^2 = (S_i S_j)^7 = I. %C A164688 The initial terms coincide with those of A170763, although the two sequences are eventually different. %C A164688 Computed with MAGMA using commands similar to those used to compute A154638. %H A164688 <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (42, 42, 42, 42, 42, 42, -903). %F A164688 G.f.: (t^7 + 2*t^6 + 2*t^5 + 2*t^4 + 2*t^3 + 2*t^2 + 2*t + 1)/(903*t^7 - 42*t^6 - 42*t^5 - 42*t^4 - 42*t^3 - 42*t^2 - 42*t + 1). %K A164688 nonn %O A164688 0,2 %A A164688 _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009