%I A005152 M0963
%S A005152 0,1,2,4,5,7,9,11,12,15,16,18,20,22,24,26
%N A005152 Rotation distance between trees.
%D A005152 D. D. Sleator, R. E. Tarjan and W. P. Thurston, Rotation distance, in 
               T. M. Cover and Gopinath, eds., Open Problems in Communication and 
               Computation, Springer, NY 1987, pp. 130-137.
%D A005152 Sleator, Daniel D.; Tarjan, Robert E.; Thurston, William P. Rotation 
               distance, triangulations and hyperbolic geometry. J. Amer. Math. 
               Soc. 1 (1988), no. 3, 647-681.
%D A005152 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%H A005152 <a href="Sindx_Tra.html#trees">Index entries for sequences related to 
               trees</a>
%Y A005152 Sequence in context: A047379 A093848 A049039 this_sequence A060831 A073727 
               A075692
%Y A005152 Adjacent sequences: A005149 A005150 A005151 this_sequence A005153 A005154 
               A005155
%K A005152 nonn,nice
%O A005152 0,3
%A A005152 N. J. A. Sloane (njas(AT)research.att.com).