Number of reduced words of length n in Coxeter group on 5 generators S_i with relations (S_i)^2 = (S_i S_j)^6 = I.
A163878
Number of reduced words of length n in Coxeter group on 5 generators S_i with relations (S_i)^2 = (S_i S_j)^6 = I.
Terms
- a(0) =1a(1) =5a(2) =20a(3) =80a(4) =320a(5) =1280a(6) =5110a(7) =20400a(8) =81450a(9) =325200a(10) =1298400a(11) =5184000a(12) =20697690a(13) =82637820a(14) =329940630a(15) =1317324420a(16) =5259563280a(17) =20999387520a(18) =83842374870a(19) =334749945240
External references
- oeis: A163878