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%I M2072
%S 1,1,2,14,546,169444,560043206
%N Comparative probability orderings on n elements.
%D T. Fine and J. Gill, Comparative probability relations, Ann. Prob. 4 (1976) 667-673.
%D D. Maclagan, Boolean Term Orders and the Root System B_n, Order 15 (1999), 279-295.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H D. Maclagan, <a href="http://arXiv.org/abs/math.CO/9809134">[math/9809134] Boolean Term Orders and the Root System B_n</a>
%e For n=3, the two orders are 1<2<12<3<13<23<123 and 1<2<3<12<13<23<123
%Y Cf. A009997.
%K hard,nice,nonn
%O 1,3
%A _N. J. A. Sloane_.
%E a(7) from Diane Maclagan and _Michael Kleber_
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