Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^15 = I.

A167648

Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^15 = 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) =49149a(16) =98292a(17) =196575a(18) =393132a(19) =786228a(20) =1572384a(21) =3144624a(22) =6288960a(23) =12577344a(24) =25153536a(25) =50304768a(26) =100604928a(27) =201200640a(28) =402382848a(29) =804728832

External references