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%I #5 Nov 23 2016 15:27:32
%S 1,26,650,15925,390000,9547200,233715300,5721300000,140056207200,
%T 3428545582800,83930052960000,2054589502867200,50295905665012800,
%U 1231232868141120000,30140313720487027200,737828346427571692800
%N Number of reduced words of length n in Coxeter group on 26 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I.
%C The initial terms coincide with those of A170745, although the two sequences are eventually different.
%C Computed with MAGMA using commands similar to those used to compute A154638.
%H <a href="/index/Rec#order_03">Index entries for linear recurrences with constant coefficients</a>, signature (24, 24, -300).
%F G.f.: (t^3 + 2*t^2 + 2*t + 1)/(300*t^3 - 24*t^2 - 24*t + 1)
%K nonn
%O 0,2
%A _John Cannon_ and _N. J. A. Sloane_, Dec 03 2009
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