Number of reduced words of length n in Coxeter group on 8 generators S_i with relations (S_i)^2 = (S_i S_j)^7 = I.

A164373

Number of reduced words of length n in Coxeter group on 8 generators S_i with relations (S_i)^2 = (S_i S_j)^7 = I.

Terms

    a(0) =1a(1) =8a(2) =56a(3) =392a(4) =2744a(5) =19208a(6) =134456a(7) =941164a(8) =6587952a(9) =46114320a(10) =322790832a(11) =2259469968a(12) =15815828784a(13) =110707574544a(14) =774930433956

External references