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A125067
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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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0
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2, 2, 28, 22, 265, 258, 2217, 2192, 17453, 18378, 134508, 149854
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OFFSET
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10,1
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COMMENTS
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See Equation 5 on page 1861 of the paper by Elena V. Konstantinova and Maxim V. Vidyuk.
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REFERENCES
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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.
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LINKS
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Table of n, a(n) for n=10..21.
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EXAMPLE
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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.
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CROSSREFS
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Cf. A121223.
Sequence in context: A288208 A024577 A121222 * A193618 A246062 A178955
Adjacent sequences: A125064 A125065 A125066 * A125068 A125069 A125070
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KEYWORD
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nonn
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AUTHOR
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Parthasarathy Nambi, Jan 09 2007
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STATUS
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approved
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