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A112619 Number of simple graphs with n vertices and three cycles. +0
3
0, 0, 0, 1, 4, 18, 79, 326, 1278, 4875, 17978, 64720, 227842, 787546, 2678207, 8982754, 29761361, 97557854 (list; graph; listen)
OFFSET

0,5

REFERENCES

J. B. Hendrickson and C. A. Parks, "Generation and Enumeration of Carbon skeletons", J. Chem. Inf. Comput. Sci, vol. 31 (1991) pp. 101-107. See Table 2, column 5 on page 103.

LINKS

Michael A. Kappler, GENSMI: Exhaustive Enumeration of Simple Graphs.

CROSSREFS

A036671 is equivalent with one cycle. A112410 is equivalent with two cycles.

Sequence in context: A017959 A100069 A058870 this_sequence A037965 A045902 A090017

Adjacent sequences: A112616 A112617 A112618 this_sequence A112620 A112621 A112622

KEYWORD

nonn

AUTHOR

Jonathan Vos Post (jvospost3(AT)gmail.com), Dec 21 2005

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.


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