Number of reduced words of length n in Coxeter group on 7 generators S_i with relations (S_i)^2 = (S_i S_j)^5 = I.
A163345
Number of reduced words of length n in Coxeter group on 7 generators S_i with relations (S_i)^2 = (S_i S_j)^5 = I.
Terms
- a(0) =1a(1) =7a(2) =42a(3) =252a(4) =1512a(5) =9051a(6) =54180a(7) =324345a(8) =1941660a(9) =11623500a(10) =69582660a(11) =416548125a(12) =2493614550a(13) =14927719275a(14) =89362970550a(15) =534960522600
External references
- oeis: A163345