Number of reduced words of length n in Coxeter group on 20 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I.
A162806
Number of reduced words of length n in Coxeter group on 20 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I.
Terms
- a(0) =1a(1) =20a(2) =380a(3) =7030a(4) =129960a(5) =2400840a(6) =44352270a(7) =819332820a(8) =15135787980a(9) =279607936230
External references
- oeis: A162806