Number of reduced words of length n in the Weyl group B_8.

Terms

a(0) =1a(1) =8a(2) =35a(3) =112a(4) =293a(5) =664a(6) =1350a(7) =2520a(8) =4389a(9) =7216a(10) =11298a(11) =16960a(12) =24541a(13) =34376a(14) =46775a(15) =62000a(16) =80241a(17) =101592a(18) =126029a(19) =153392a(20) =183373a(21) =215512a(22) =249202a(23) =283704a(24) =318171a(25) =351680a(26) =383270a(27) =411984a(28) =436913a(29) =457240