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A162833 Number of reduced words of length n in Coxeter group on 30 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I. 0
1, 30, 870, 24795, 706440, 20121360, 573111630, 16323709080, 464941707720, 13242748348620, 377187895691040, 10743291699776160, 305996872843541880, 8715586321562342880, 248242553013255652320, 7070593171000425862320 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
The initial terms coincide with those of A170749, although the two sequences are eventually different.
Computed with MAGMA using commands similar to those used to compute A154638.
LINKS
FORMULA
G.f.: (t^3 + 2*t^2 + 2*t + 1)/(406*t^3 - 28*t^2 - 28*t + 1)
MATHEMATICA
coxG[{3, 406, -28}] (* The coxG program is at A169452 *) (* Harvey P. Dale, Oct 20 2023 *)
CROSSREFS
Sequence in context: A001201 A367333 A007850 * A163208 A163552 A164027
KEYWORD
nonn
AUTHOR
John Cannon and N. J. A. Sloane, Dec 03 2009
STATUS
approved

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)