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A052107 Number of self-complementary 3-multigraphs on n nodes. 0
1, 0, 0, 4, 16, 0, 0, 2080, 32896, 0, 0, 178990080, 11453771776, 0, 0, 3002404080455680, 768614611824951296, 0, 0, 10316167090130469587779584, 10563755026498136326181748736, 0, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

REFERENCES

D. Wille, Enumeration of self-complementary structures, J. Combin. Theory Ser.B 25 (1978), no. 2, 143-150.

J. Xu, Ch. R. Wang, J. F. Wang, The theory of self-complementary k-multigraphs (in Chinese), Pure Appl. Math. [Chuncui Shuxue yu Yingyong Shuxue] 10 (1994), Special Issue, 18-22.

V. Jovovic, On the number of m-place relations (in Russian), Logiko-algebraicheskie konstruktsii, Tver, 1992, 59-66.

LINKS

Table of n, a(n) for n=1..23.

CROSSREFS

Cf. A000171, A053588, A053400.

Sequence in context: A070037 A220788 A061849 * A069019 A188249 A228559

Adjacent sequences:  A052104 A052105 A052106 * A052108 A052109 A052110

KEYWORD

nonn

AUTHOR

Vladeta Jovovic, Jan 20 2000

STATUS

approved

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Last modified October 23 13:13 EDT 2014. Contains 248464 sequences.