cp's OEIS Frontend

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.

A165548 Number of reduced words of length n in Coxeter group on 32 generators S_i with relations (S_i)^2 = (S_i S_j)^9 = I.

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%I A165548 #6 Nov 23 2016 22:14:14
%S A165548 1,32,992,30752,953312,29552672,916132832,28400117792,880403651552,
%T A165548 27292513197616,846067909110720,26228105181956160,813071260625880000,
%U A165548 25205209078944690240,781361481433100114880,24222205923986359801920
%N A165548 Number of reduced words of length n in Coxeter group on 32 generators S_i with relations (S_i)^2 = (S_i S_j)^9 = I.
%C A165548 The initial terms coincide with those of A170751, although the two sequences are eventually different.
%C A165548 Computed with MAGMA using commands similar to those used to compute A154638.
%H A165548 <a href="/index/Rec#order_09">Index entries for linear recurrences with constant coefficients</a>, signature (30, 30, 30, 30, 30, 30, 30, 30, -465).
%F A165548 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 A165548 1)/(465*t^9 - 30*t^8 - 30*t^7 - 30*t^6 - 30*t^5 - 30*t^4 - 30*t^3 -
%F A165548 30*t^2 - 30*t + 1)
%K A165548 nonn
%O A165548 0,2
%A A165548 _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009