A141456 Number of hypoenergetic chemical trees with n vertices.

1, 1, 1, 1, 3, 2, 2, 8, 10, 4, 17, 52, 33, 29, 141, 250

Offset

3,5

References

Ivan Gutman and Slavko Radenkovic,"Hypoenergetic molecular graphs",Indian J. of Chemistry, vol. 46A, (2007), pp. 1733-1736. See Table 1 on page 1735.

Links

Table of n, a(n) for n=3..18.

Example

The number of hypoenergetic chemical trees with 18 vertices is 250.

Crossrefs

Sequence in context: A268864 A329956 A242703 * A137445 A195422 A176530

Adjacent sequences: A141453 A141454 A141455 * A141457 A141458 A141459

Keyword

nonn

Author

Parthasarathy Nambi, Aug 08 2008

Status

approved