Number of reduced words of length n in the Weyl group D_12.

Terms

a(0) =1a(1) =12a(2) =77a(3) =352a(4) =1286a(5) =3992a(6) =10933a(7) =27092a(8) =61841a(9) =131768a(10) =264759a(11) =505660a(12) =923857a(13) =1623104a(14) =2753895a(15) =4528612a(16) =7239585a(17) =11280072a(18) =17168009a(19) =25572196a(20) =37340381a(21) =53528488a(22) =75430016a(23) =104604424a(24) =142903123a(25) =192491532a(26) =255865533a(27) =335860592a(28) =435651810a(29) =558743240