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A125069
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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.
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6, 19, 59, 184, 495, 1259, 3105, 7684, 19251, 48561, 123800, 317883, 822980, 2144429
(list; graph; refs; listen; history; internal format)
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OFFSET
| 8,1
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COMMENTS
| See Equation 4 on page 1861 for a definition of MTI.
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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.
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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.
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CROSSREFS
| Cf. A121223.
Sequence in context: A176883 A027044 A057571 * A080926 A184189 A152098
Adjacent sequences: A125066 A125067 A125068 * A125070 A125071 A125072
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KEYWORD
| nonn
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AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jan 09 2007
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