A120979 Number of degeneracies on the sets of N ordinary trees with p vertices.

2, 2, 26, 22, 249, 250, 2115, 2080, 16211, 17269, 126026, 141282

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 3 on page 1868.

Links

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

Example

If p=19 then the parameter H_D is 17269 which is the tenth term in the sequence. See the paper by Elena V. Konstantinova and Maxim V. Vidyuk for the definition of H_D.

Crossrefs

Sequence in context: A195967 A301602 A354898 * A348587 A032000 A371932

Adjacent sequences: A120976 A120977 A120978 * A120980 A120981 A120982

Keyword

nonn,uned

Author

Parthasarathy Nambi, Aug 19 2006

Status

approved