A120968 Number of degeneracies on the sets of N ordinary trees with p vertices.

4, 2, 43, 43, 332, 284, 2766, 2494

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 2 on page 1868.

Links

Table of n, a(n) for n=1..8.

Example

If p=21 then the parameter I_D is 2494 which is the eighth term in the sequence. See the paper by Elena V. Konstantinova and Maxim V. Vidyuk for the definition of I_D.

Crossrefs

Sequence in context: A123850 A280780 A264755 * A193894 A107667 A362155

Adjacent sequences: A120965 A120966 A120967 * A120969 A120970 A120971

Keyword

nonn,uned

Author

Parthasarathy Nambi, Aug 19 2006

Status

approved