Number of reduced words of length n in the Weyl group E_8 on 8 generators and order 696729600.

Terms

a(0) =1a(1) =8a(2) =35a(3) =112a(4) =294a(5) =672a(6) =1386a(7) =2640a(8) =4718a(9) =8000a(10) =12978a(11) =20272a(12) =30645a(13) =45016a(14) =64470a(15) =90264a(16) =123829a(17) =166768a(18) =220849a(19) =287992a(20) =370250a(21) =469784a(22) =588833a(23) =729680a(24) =894613a(25) =1085880a(26) =1305640a(27) =1555912a(28) =1838523a(29) =2155056