Number of reduced words of length n in Coxeter group on 7 generators S_i with relations (S_i)^2 = (S_i S_j)^4 = I.
A162941
Number of reduced words of length n in Coxeter group on 7 generators S_i with relations (S_i)^2 = (S_i S_j)^4 = I.
Terms
- a(0) =1a(1) =7a(2) =42a(3) =252a(4) =1491a(5) =8820a(6) =52185a(7) =308700a(8) =1826160a(9) =10802925a(10) =63906150a(11) =378045675a(12) =2236381350a(13) =13229622000a(14) =78261652875a(15) =462967596000
External references
- oeis: A162941