Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^12 = I.

A166467

Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^12 = I.

Terms

    a(0) =1a(1) =3a(2) =6a(3) =12a(4) =24a(5) =48a(6) =96a(7) =192a(8) =384a(9) =768a(10) =1536a(11) =3072a(12) =6141a(13) =12276a(14) =24543a(15) =49068a(16) =98100a(17) =196128a(18) =392112a(19) =783936a(20) =1567296a(21) =3133440a(22) =6264576a(23) =12524544a(24) =25039878a(25) =50061345a(26) =100085880a(27) =200098167a(28) =400049202a(29) =799804248

External references