Number of reduced words of length n in Coxeter group on 7 generators S_i with relations (S_i)^2 = (S_i S_j)^6 = I.
A163923
Number of reduced words of length n in Coxeter group on 7 generators S_i with relations (S_i)^2 = (S_i S_j)^6 = I.
Terms
- a(0) =1a(1) =7a(2) =42a(3) =252a(4) =1512a(5) =9072a(6) =54411a(7) =326340a(8) =1957305a(9) =11739420a(10) =70410060a(11) =422301600a(12) =2532857460a(13) =15191434125a(14) =91114353750a(15) =546480693675
External references
- oeis: A163923