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 A163232 #19 Sep 08 2022 08:45:46
%S A163232 1,46,2070,93150,4190715,188535600,8482007160,381596054400,
%T A163232 17167581467190,772350369021000,34747182860785560,1563237055602189000,
%U A163232 70328294002955286540,3163991615757072698400,142344458748855549948960
%N A163232 Number of reduced words of length n in Coxeter group on 46 generators S_i with relations (S_i)^2 = (S_i S_j)^4 = I.
%C A163232 The initial terms coincide with those of A170765, although the two sequences are eventually different.
%C A163232 Computed with MAGMA using commands similar to those used to compute A154638.
%H A163232 G. C. Greubel, <a href="/A163232/b163232.txt">Table of n, a(n) for n = 0..600</a>
%H A163232 <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (44, 44, 44, -990).
%F A163232 G.f.: (t^4 + 2*t^3 + 2*t^2 + 2*t + 1)/(990*t^4 - 44*t^3 - 44*t^2 - 44*t + 1).
%F A163232 a(n) = 44*a(n-1)+44*a(n-2)+44*a(n-3)-990*a(n-4). - _Wesley Ivan Hurt_, May 10 2021
%t A163232 CoefficientList[Series[(t^4+2*t^3+2*t^2+2*t+1)/(990*t^4-44*t^3-44*t^2 - 44*t+1), {t,0,20}], t] (* or *) Join[{1}, LinearRecurrence[ {44, 44, 44, -990}, {46,2070,93150,4190715}, 20]] (* _G. C. Greubel_, Dec 11 2016 *)
%t A163232 coxG[{4, 990, -44}] (* The coxG program is at A169452 *) (* _G. C. Greubel_, May 01 2019 *)
%o A163232 (PARI) my(t='t+O('t^20)); Vec((t^4+2*t^3+2*t^2+2*t+1)/(990*t^4-44*t^3 - 44*t^2-44*t+1)) \\ _G. C. Greubel_, Dec 11 2016
%o A163232 (Magma) R<x>:=PowerSeriesRing(Integers(), 30); Coefficients(R!( (1+x)*(1-x^4)/(1-45*x+1034*x^4-990*x^5) )); // _G. C. Greubel_, May 01 2019
%o A163232 (Sage) ((1+x)*(1-x^4)/(1-45*x+1034*x^4-990*x^5)).series(x, 30).coefficients(x, sparse=False) # _G. C. Greubel_, May 01 2019
%o A163232 (GAP) a:=[46,2070,93150,4190715];; for n in [5..20] do a[n]:=44*(a[n-1] +a[n-2] +a[n-3]) -990*a[n-4]; od; Concatenation([1], a); # _G. C. Greubel_, May 01 2019
%K A163232 nonn
%O A163232 0,2
%A A163232 _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009