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A006202 Number of 4-colored labeled graphs on n nodes.
(Formerly M5356)
5
0, 0, 0, 1, 80, 7040, 878080, 169967616, 53247344640, 27580935700480, 23884321532149760, 34771166607668412416, 85316631064301031915520, 353171748158258855521812480, 2467057266045387831319241687040, 29078599995993904385498084987109376 (list; graph; refs; listen; history; internal format)
OFFSET

1,5

REFERENCES

F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973, p. 18, col. 4 of Table 1.5.1 (divided by 64).

R. C. Read, The number of k-colored graphs on labeled nodes, Canad. J. Math., 12 (1960), 410-414.

R. C. Read, personal communication.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

CROSSREFS

Cf. A000683. A diagonal of A058843.

Sequence in context: A203171 A076004 A190931 * A116252 A159734 A091754

Adjacent sequences:  A006199 A006200 A006201 * A006203 A006204 A006205

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 14 18:09 EST 2012. Contains 205663 sequences.