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A121221
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Number of degeneracies on the sets of N ordinary trees with p vertices.
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0
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2, 2, 4, 15, 35, 137, 306, 1056, 2510, 8094, 21568, 66310, 183338, 545993, 1538831
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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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 5 on page 1868.
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EXAMPLE
| If p=16 then the parameter H_lambda is 8094 which is the tenth term in the sequence. See the paper by Elena V. Konstantinova and Maxim V. Vidyuk for the definition of H_lambda.
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CROSSREFS
| Sequence in context: A205310 A153968 A153965 * A122598 A087783 A176190
Adjacent sequences: A121218 A121219 A121220 * A121222 A121223 A121224
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KEYWORD
| nonn,uned
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AUTHOR
| Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Aug 20 2006
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