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A246602
Number of connected bicubical graphs on 2n labeled nodes of two colors
0
1, 24, 2040, 297000, 68922000, 24038380800
OFFSET
3,2
COMMENTS
Should a(7) be 68909400? - Andrew Howroyd, May 23 2018
REFERENCES
R. C. Read, Some Enumeration Problems in Graph Theory. Ph.D. Dissertation, Department of Mathematics, Univ. London, 1958.
CROSSREFS
Cf. A001501.
Sequence in context: A263605 A327197 A194472 * A001501 A054005 A107675
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Sep 08 2014
STATUS
approved