

A125064


Number of monocyclic skeletons with a ring size of n. See the paper by Hendrickson and Parks for details.


5



1, 2, 11, 39, 169, 534, 1612, 3894, 8771, 16307, 29391, 43291, 69429, 83571
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OFFSET

16,2


REFERENCES

J. B. Hendrickson and C. A. Parks, "Generation and Enumeration of Carbon skeletons", J. Chem. Inf. Comput. Sci, vol. 31 (1991) pp. 101107. See Table 6 on page 103.


LINKS

Table of n, a(n) for n=16..29.


EXAMPLE

If the ring size 16 then the number of skeletons is 1.
If the ring size 15 then the number of skeletons is 2.
If the ring size 14 then the number of skeletons is 11.
If the ring size 13 then the number of skeletons is 39.
If the ring size 3 then the number of skeletons is 83571.


CROSSREFS

Cf. A000602, A036671, A112410, A112619, A112408, A112424, A112425, A112426.
Sequence in context: A276659 A187259 A296593 * A274326 A055329 A193005
Adjacent sequences: A125061 A125062 A125063 * A125065 A125066 A125067


KEYWORD

nonn


AUTHOR

Parthasarathy Nambi, Jan 05 2007


STATUS

approved



