

A121222


Number of degeneracies on the sets of N ordinary trees with p vertices.


0



2, 2, 28, 22, 261, 258, 2196, 2164, 17255, 18175, 133071, 147986
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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, 18601871. See Table 15, column 7 on page 1868.


LINKS

Table of n, a(n) for n=1..12.


EXAMPLE

If p=16 then the parameter H_2 is 2196 which is the seventh term in the sequence. See the paper by Elena V. Konstantinova and Maxim V. Vidyuk for the definition of H_2.


CROSSREFS

Sequence in context: A236286 A288208 A024577 * A125067 A193618 A246062
Adjacent sequences: A121219 A121220 A121221 * A121223 A121224 A121225


KEYWORD

nonn,uned


AUTHOR

Parthasarathy Nambi, Aug 20 2006


STATUS

approved



