%I #2 Mar 30 2012 17:25:50
%S 4,4,39,58,214,502,1621,3958,12295,30962,91967,245143,720699
%N Number of degeneracies on the sets of n ordinary trees with n vertices. These are the values of the information index, (I^w)_D, in Table 15 of the paper by Elena V. Konstantinova and Maxim V. Vidyuk.
%D Elena V. Konstantinova and Maxim V. Vidyuk, "Discriminating tests of information and topological indices. Animals and trees", J. Chem. Inf. Comput. Sci., (2003), vol. 43, 1860-1871. See Table 15, column 9 on page 1868.
%e If n=9 then the value of the information index, (I^w)_D, is 4.
%e If n=10 then the value of the information index, (I^w)_D, is 4.
%e If n=11 then the value of the information index, (I^w)_D, is 39.
%e If n=12 then the value of the information index, (I^w)_D, is 58.
%Y Cf. A121223.
%K nonn
%O 9,1
%A _Parthasarathy Nambi_, Jan 09 2007