Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^17 = I.
A168680
Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^17 = 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) =6144a(13) =12288a(14) =24576a(15) =49152a(16) =98304a(17) =196605a(18) =393204a(19) =786399a(20) =1572780a(21) =3145524a(22) =6290976a(23) =12581808a(24) =25163328a(25) =50326080a(26) =100651008a(27) =201299712a(28) =402594816a(29) =805180416
External references
- oeis: A168680