A125067 Number of degeneracies on the sets of n ordinary trees with n vertices. These are the values of the average distance sum connectivity index, J, in Table 15 of the paper by Elena V. Konstantinova and Maxim V. Vidyuk.

2, 2, 28, 22, 265, 258, 2217, 2192, 17453, 18378, 134508, 149854

Offset

10,1

Comments

See Equation 5 on page 1861 of the paper by Elena V. Konstantinova and Maxim V. Vidyuk.

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 10 on page 1868.

Links

Table of n, a(n) for n=10..21.

Example

If n=10 then the value of the average distance sum connectivity index, J, is 2.
If n=11 then the value of the average distance sum connectivity index, J, is 2.
If n=12 then the value of the average distance sum connectivity index, J, is 28.
If n=13 then the value of the average distance sum connectivity index, J, is 22.

Crossrefs

Cf. A121223.

Sequence in context: A288208 A024577 A121222 * A369755 A193618 A246062

Adjacent sequences: A125064 A125065 A125066 * A125068 A125069 A125070

Keyword

nonn

Author

Parthasarathy Nambi, Jan 09 2007

Status

approved