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Search: id:A125081
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| A125081 |
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Number of degeneracies on the sets of n ordinary trees with n vertices. These are the values of the Wiener number, W, in Table 15 of the paper by Elena V. Konstantinova and Maxim V. Vidyuk. |
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1
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| 4, 6, 39, 83, 221, 528, 1286, 3131, 7724, 19289, 48610, 123832, 317932, 823029, 2144486
(list; graph; listen)
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OFFSET
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7,1
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COMMENT
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See Equation 2 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 13 on page 1868.
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EXAMPLE
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If n=7 then the value of the Wiener number, W, is 4.
If n=8 then the value of the Wiener number, W, is 6.
If n=9 then the value of the Wiener number, W, is 39.
If n=10 then the value of the Wiener number, W, is 83.
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CROSSREFS
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Cf. A121223.
Sequence in context: A056315 A103234 A074061 this_sequence A023644 A145387 A034923
Adjacent sequences: A125078 A125079 A125080 this_sequence A125082 A125083 A125084
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KEYWORD
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nonn
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AUTHOR
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Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jan 09 2007
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