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A125069
Number of degeneracies on the sets of n ordinary trees with n vertices. These are the values of the Schultz molecular topological index, MTI, in Table 15 of the paper by Elena V. Konstantinova and Maxim V. Vidyuk.
0
6, 19, 59, 184, 495, 1259, 3105, 7684, 19251, 48561, 123800, 317883, 822980, 2144429
OFFSET
8,1
COMMENTS
See Equation 4 on page 1861 for a definition of MTI.
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 12 on page 1868.
EXAMPLE
If n=8 then the value of the Schultz molecular topological index, MTI, is 6.
If n=9 then the value of the Schultz molecular topological index, MTI, is 19.
If n=10 then the value of the Schultz molecular topological index, MTI, is 59.
If n=11 then the value of the Schultz molecular topological index, MTI, is 184.
CROSSREFS
Cf. A121223.
Sequence in context: A238055 A272227 A272587 * A080926 A184189 A152098
KEYWORD
nonn
AUTHOR
Parthasarathy Nambi, Jan 09 2007
STATUS
approved