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A125067
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.
0
2, 2, 28, 22, 265, 258, 2217, 2192, 17453, 18378, 134508, 149854
OFFSET
10,1
COMMENTS
See Equation 5 on page 1861 of the paper by Elena V. Konstantinova and Maxim V. Vidyuk.
REFERENCES
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.
EXAMPLE
If n=10 then the value of the average distance sum connectivity index, J, is 2.
If n=11 then the value of the average distance sum connectivity index, J, is 2.
If n=12 then the value of the average distance sum connectivity index, J, is 28.
If n=13 then the value of the average distance sum connectivity index, J, is 22.
CROSSREFS
Cf. A121223.
Sequence in context: A288208 A024577 A121222 * A369755 A193618 A246062
KEYWORD
nonn
AUTHOR
Parthasarathy Nambi, Jan 09 2007
STATUS
approved