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 A164694 #10 Feb 25 2024 09:09:39 %S A164694 1,49,2352,112896,5419008,260112384,12485394432,599298931560, %T A164694 28766348658432,1380784732896408,66277667049027840, %U A164694 3181328012113348608,152703744281921323008,7329779711155291815936,351829425445361287501224 %N A164694 Number of reduced words of length n in Coxeter group on 49 generators S_i with relations (S_i)^2 = (S_i S_j)^7 = I. %C A164694 The initial terms coincide with those of A170768, although the two sequences are eventually different. %C A164694 Computed with MAGMA using commands similar to those used to compute A154638. %H A164694 <a href="/index/Rec#order_07">Index entries for linear recurrences with constant coefficients</a>, signature (47, 47, 47, 47, 47, 47, -1128). %F A164694 G.f.: (t^7 + 2*t^6 + 2*t^5 + 2*t^4 + 2*t^3 + 2*t^2 + 2*t + 1)/(1128*t^7 - 47*t^6 - 47*t^5 - 47*t^4 - 47*t^3 - 47*t^2 - 47*t + 1). %K A164694 nonn %O A164694 0,2 %A A164694 _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009