Number of reduced words of length n in the Weyl group A_25.

Terms

a(0) =1a(1) =25a(2) =324a(3) =2899a(4) =20124a(5) =115480a(6) =570050a(7) =2487421a(8) =9785321a(9) =35225346a(10) =117389766a(11) =365534676a(12) =1071606665a(13) =2976282415a(14) =7872887865a(15) =19923350639a(16) =48420830029a(17) =113395054929a(18) =256634690379a(19) =562744102479