%I #5 Jul 19 2015 10:26:14
%S 1,17,152,952,4691,19363,69615,223839,656013,1777469,4501652,10749780,
%T 24374702,52784014,109694031,219658751,425310726,798645126,1458198681,
%U 2594648969,4508216638,7662325662,12759298116,20845464260,33454989519
%N Number of reduced words of length n in the Weyl group B_17.
%C Computed with MAGMA using commands similar to those used to compute A161409.
%D J. E. Humphreys, Reflection Groups and Coxeter Groups, Cambridge, 1990. See under PoincarĂ© polynomial.
%D N. Bourbaki, Groupes et alg. de Lie, Chap. 4, 5, 6. (The group is defined in Planche II.)
%F G.f. for B_m is the polynomial Prod_{k=1..m}(1x^(2k))/(1x). Only finitely many terms are nonzero. This is a row of the triangle in A128084.
%K nonn
%O 0,2
%A _John Cannon_ and _N. J. A. Sloane_, Nov 30 2009
