|
Search: id:A112426
|
|
|
| A112426 |
|
Number of simple graphs with n vertices and seven cycles. |
|
+0
2
|
|
| 0, 0, 0, 0, 0, 1, 9, 134, 1714, 18436, 167702, 1327242, 9372118, 60319259
(list; graph; listen)
|
|
|
OFFSET
|
0,7
|
|
|
COMMENT
|
Distribution of carbon skeletons. See the paper by Hendrikson and Parks for details. If n=6 the number of monocyclic skeletons is 1. If n=7 the number of monocyclic skeletons is 9. If n=10 the number of monocyclic skeletons is 18436. - Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Jan 05 2007
|
|
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 9 on page 103.
|
|
LINKS
|
Michael A. Kappler, GENSMI: Exhaustive Enumeration of Simple Graphs.
|
|
CROSSREFS
|
Cf. A036671, A112410.
Cf. A000602, A036671, A112410, A112619, A112408, A112424, A112425.
Adjacent sequences: A112423 A112424 A112425 this_sequence A112427 A112428 A112429
Sequence in context: A089547 A110273 A082760 this_sequence A034723 A052137 A003376
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Jonathan Vos Post (jvospost2(AT)yahoo.com), Dec 21 2005
|
|
|
Search completed in 0.002 seconds
|
