Number of reduced words of length n in Coxeter group on 7 generators S_i with relations (S_i)^2 = (S_i S_j)^9 = I.
A165214
Number of reduced words of length n in Coxeter group on 7 generators S_i with relations (S_i)^2 = (S_i S_j)^9 = I.
Terms
- a(0) =1a(1) =7a(2) =42a(3) =252a(4) =1512a(5) =9072a(6) =54432a(7) =326592a(8) =1959552a(9) =11757291a(10) =70543620a(11) =423260985a(12) =2539561500a(13) =15237342540a(14) =91423896480a(15) =548542426320
External references
- oeis: A165214