A121222 Number of degeneracies on the sets of N ordinary trees with p vertices.

2, 2, 28, 22, 261, 258, 2196, 2164, 17255, 18175, 133071, 147986

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 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 A369755 A193618

Adjacent sequences: A121219 A121220 A121221 * A121223 A121224 A121225

Keyword

nonn,uned

Author

Parthasarathy Nambi, Aug 20 2006

Status

approved