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.

A165140 Number of reduced words of length n in Coxeter group on 33 generators S_i with relations (S_i)^2 = (S_i S_j)^8 = I.

This page as a plain text file.
%I A165140 #6 Nov 23 2016 18:32:52
%S A165140 1,33,1056,33792,1081344,34603008,1107296256,35433480192,
%T A165140 1133871365616,36283883682816,1161084277309968,37154696856634368,
%U A165140 1188950298859192320,38046409545794715648,1217485104899048865792,38959523338645338587136
%N A165140 Number of reduced words of length n in Coxeter group on 33 generators S_i with relations (S_i)^2 = (S_i S_j)^8 = I.
%C A165140 The initial terms coincide with those of A170752, although the two sequences are eventually different.
%C A165140 Computed with MAGMA using commands similar to those used to compute A154638.
%H A165140 <a href="/index/Rec#order_08">Index entries for linear recurrences with constant coefficients</a>, signature (31, 31, 31, 31, 31, 31, 31, -496).
%F A165140 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)/(496*t^8 -
%F A165140 31*t^7 - 31*t^6 - 31*t^5 - 31*t^4 - 31*t^3 - 31*t^2 - 31*t + 1)
%K A165140 nonn
%O A165140 0,2
%A A165140 _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009