Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^16 = I.
A167882
Number of reduced words of length n in Coxeter group on 4 generators S_i with relations (S_i)^2 = (S_i S_j)^16 = I.
Terms
- a(0) =1a(1) =4a(2) =12a(3) =36a(4) =108a(5) =324a(6) =972a(7) =2916a(8) =8748a(9) =26244a(10) =78732a(11) =236196a(12) =708588a(13) =2125764a(14) =6377292a(15) =19131876a(16) =57395622a(17) =172186848a(18) =516560496a(19) =1549681344a(20) =4649043600a(21) =13947129504a(22) =41841384624a(23) =125524142208a(24) =376572391632
External references
- oeis: A167882