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A162835
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Number of reduced words of length n in Coxeter group on 31 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I.
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0
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1, 31, 930, 27435, 809100, 23854965, 703323660, 20736221625, 611369903490, 18025131836235, 531438294045150, 15668493442542015, 461957088012265560, 13619966204279779425, 401559980828963528040, 11839267130678720397885
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OFFSET
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0,2
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COMMENTS
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The initial terms coincide with those of A170750, although the two sequences are eventually different.
Computed with MAGMA using commands similar to those used to compute A154638.
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LINKS
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FORMULA
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G.f.: (t^3 + 2*t^2 + 2*t + 1)/(435*t^3 - 29*t^2 - 29*t + 1)
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MATHEMATICA
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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