%I #6 Mar 31 2012 10:24:25
%S 1,1,2,3,4,7,9,12,18,25,32,47,61,79,108,143,182,246,315,404,526,674,
%T 849,1102,1389,1745,2215,2788,3467,4384
%N Number of isomorphism classes of Coxeter systems with n reflections
%D Anders Björner, Francesco Brenti, Combinatorics of Coxeter groups, Graduate Texts in Mathematics, 231. Springer, New York, 2005.
%K nonn
%O 1,3
%A _Matthew J. Samuel_, May 24 2011
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