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A164674
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Number of reduced words of length n in Coxeter group on 38 generators S_i with relations (S_i)^2 = (S_i S_j)^7 = I.
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0
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1, 38, 1406, 52022, 1924814, 71218118, 2635070366, 97497602839, 3607411279032, 133474216362480, 4938545969828712, 182726199567089568, 6760869335269121304, 250152163602569357904, 9255629986606705913226
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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 A170757, 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^7 + 2*t^6 + 2*t^5 + 2*t^4 + 2*t^3 + 2*t^2 + 2*t + 1)/(666*t^7 - 36*t^6 -
36*t^5 - 36*t^4 - 36*t^3 - 36*t^2 - 36*t + 1)
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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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