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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 (list; graph; refs; listen; history; text; internal format)
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.

LINKS

Table of n, a(n) for n=8..21.

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

Adjacent sequences:  A125066 A125067 A125068 * A125070 A125071 A125072

KEYWORD

nonn

AUTHOR

Parthasarathy Nambi, Jan 09 2007

STATUS

approved

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Last modified May 8 13:26 EDT 2021. Contains 343666 sequences. (Running on oeis4.)