%I #6 May 24 2018 13:22:22

%S 1,12,1296,9856896

%N Number of single-peaked preference orders on an n-set.

%H Jonathan K. Hodge, Lindsey Brown, Hoang Ha, <a href="https://doi.org/10.1016/j.dam.2013.11.006">Single-Peaked Preferences over Multidimensional Binary Alternatives</a>, Discrete Applied Mathematics, Vol. 166 (2014), 14-25, 2014. See p. 24.

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, Sep 14 2014