Number of reduced words of length n in Coxeter group on 7 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I.
A162744
Number of reduced words of length n in Coxeter group on 7 generators S_i with relations (S_i)^2 = (S_i S_j)^3 = I.
Terms
- a(0) =1a(1) =7a(2) =42a(3) =231a(4) =1260a(5) =6825a(6) =36960a(7) =200025a(8) =1082550a(9) =5858475a(10) =31704750a(11) =171577875a(12) =928536000a(13) =5024998125a(14) =27194002500a(15) =147166963125a(16) =796429856250
External references
- oeis: A162744