A125066 - OEIS

A125066

Number of degeneracies on the sets of n ordinary trees with n vertices. These are the values of the information index, (I^w)_D, in Table 15 of the paper by Elena V. Konstantinova and Maxim V. Vidyuk.

4, 4, 39, 58, 214, 502, 1621, 3958, 12295, 30962, 91967, 245143, 720699

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OFFSET

9,1

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 9 on page 1868.

LINKS

Table of n, a(n) for n=9..21.

EXAMPLE

If n=9 then the value of the information index, (I^w)_D, is 4.

If n=10 then the value of the information index, (I^w)_D, is 4.

If n=11 then the value of the information index, (I^w)_D, is 39.

If n=12 then the value of the information index, (I^w)_D, is 58.

CROSSREFS

Cf. A121223.

Sequence in context: A321313 A070959 A367643 * A271945 A016498 A197798

Adjacent sequences: A125063 A125064 A125065 * A125067 A125068 A125069

KEYWORD

nonn

AUTHOR

Parthasarathy Nambi, Jan 09 2007

STATUS

approved