This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A161933 #9 Mar 17 2025 22:18:26
%S A161933 1,26,350,3250,23399,139204,712179,3220074,13124124,48942894,
%T A161933 168958960,544988210,1655019795,4761697020,13048465756,34209731996,
%U A161933 86141195946,209025000936,490211005011,1113996801606,2458618650891,5280637344216,11057534183046,22610808876996
%N A161933 Number of reduced words of length n in the Weyl group B_26.
%C A161933 Computed with MAGMA using commands similar to those used to compute A161409.
%D A161933 J. E. Humphreys, Reflection Groups and Coxeter Groups, Cambridge, 1990. See under Poincaré polynomial.
%D A161933 N. Bourbaki, Groupes et alg. de Lie, Chap. 4, 5, 6. (The group is defined in Planche II.)
%H A161933 Andrew Howroyd, <a href="/A161933/b161933.txt">Table of n, a(n) for n = 0..676</a>
%F A161933 G.f. for B_m is the polynomial Prod_{k=1..m}(1-x^(2k))/(1-x). Only finitely many terms are nonzero. This is a row of the triangle in A128084.
%Y A161933 Row n=26 of A128084.
%K A161933 nonn,fini,full
%O A161933 0,2
%A A161933 _John Cannon_ and _N. J. A. Sloane_, Nov 30 2009