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 A164983 #8 Nov 23 2016 18:31:56
%S A164983 1,30,870,25230,731670,21218430,615334470,17844699630,517496288835,
%T A164983 15007392363600,435214378179000,12621216956594400,366015291433936200,
%U A164983 10614443442672409200,307818859579059389400,8926746920297948448000
%N A164983 Number of reduced words of length n in Coxeter group on 30 generators S_i with relations (S_i)^2 = (S_i S_j)^8 = I.
%C A164983 The initial terms coincide with those of A170749, although the two sequences are eventually different.
%C A164983 Computed with MAGMA using commands similar to those used to compute A154638.
%H A164983 <a href="/index/Rec#order_08">Index entries for linear recurrences with constant coefficients</a>, signature (28, 28, 28, 28, 28, 28, 28, -406).
%F A164983 G.f. (t^8 + 2*t^7 + 2*t^6 + 2*t^5 + 2*t^4 + 2*t^3 + 2*t^2 + 2*t + 1)/(406*t^8 -
%F A164983 28*t^7 - 28*t^6 - 28*t^5 - 28*t^4 - 28*t^3 - 28*t^2 - 28*t + 1)
%t A164983 coxG[{8,406,-28}] (* The coxG program is at A169452 *) (* _Harvey P. Dale_, Oct 27 2016 *)
%K A164983 nonn
%O A164983 0,2
%A A164983 _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009