Number of reduced words of length n in Coxeter group on 5 generators S_i with relations (S_i)^2 = (S_i S_j)^8 = I.

A164706

Number of reduced words of length n in Coxeter group on 5 generators S_i with relations (S_i)^2 = (S_i S_j)^8 = I.

Terms

    a(0) =1a(1) =5a(2) =20a(3) =80a(4) =320a(5) =1280a(6) =5120a(7) =20480a(8) =81910a(9) =327600a(10) =1310250a(11) =5240400a(12) =20959200a(13) =83827200a(14) =335270400a(15) =1340928000a(16) =5363097690a(17) =21449933820a(18) =85789908630a(19) =343120332420

External references