A246602 Number of connected bicubical graphs on 2n labeled nodes of two colors

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.

Links

Table of n, a(n) for n=3..8.

R. C. Read, Letter to N. J. A. Sloane, Feb 04 1971

Crossrefs

Cf. A001501.

Sequence in context: A263605 A327197 A194472 * A001501 A054005 A107675

Adjacent sequences: A246599 A246600 A246601 * A246603 A246604 A246605

Keyword

nonn,more

Author

N. J. A. Sloane, Sep 08 2014

Status

approved