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Number of degeneracies on the sets of n ordinary trees with n vertices. These are the values of the average distance sum connectivity index, J, in Table 15 of the paper by Elena V. Konstantinova and Maxim V. Vidyuk.
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%I #2 Mar 30 2012 17:25:50

%S 2,2,28,22,265,258,2217,2192,17453,18378,134508,149854

%N Number of degeneracies on the sets of n ordinary trees with n vertices. These are the values of the average distance sum connectivity index, J, in Table 15 of the paper by Elena V. Konstantinova and Maxim V. Vidyuk.

%C See Equation 5 on page 1861 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 10 on page 1868.

%e If n=10 then the value of the average distance sum connectivity index, J, is 2.

%e If n=11 then the value of the average distance sum connectivity index, J, is 2.

%e If n=12 then the value of the average distance sum connectivity index, J, is 28.

%e If n=13 then the value of the average distance sum connectivity index, J, is 22.

%Y Cf. A121223.

%K nonn

%O 10,1

%A _Parthasarathy Nambi_, Jan 09 2007