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A165690
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Number of reduced words of length n in Coxeter group on 40 generators S_i with relations (S_i)^2 = (S_i S_j)^9 = I.
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0
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1, 40, 1560, 60840, 2372760, 92537640, 3608967960, 140749750440, 5489240267160, 214080370418460, 8349134446289520, 325616243404105680, 12699033492713883120, 495262306214038144080, 19315229942277159012720
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