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A121221
Number of degeneracies on the sets of N ordinary trees with p vertices.
0
2, 2, 4, 15, 35, 137, 306, 1056, 2510, 8094, 21568, 66310, 183338, 545993, 1538831
OFFSET
1,1
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.
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.
CROSSREFS
Sequence in context: A261531 A153968 A153965 * A122598 A279069 A257609
KEYWORD
nonn,uned
AUTHOR
Parthasarathy Nambi, Aug 20 2006
STATUS
approved