login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A002006 Almost trivalent maps.
(Formerly M2137 N0849)
4
2, 24, 272, 3424, 46720, 676608, 10251520, 160900608 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

REFERENCES

R. C. Mullin, E. Nemeth and P. J. Schellenberg, The enumeration of almost cubic maps, pp. 281-295 in Proceedings of the Louisiana Conference on Combinatorics, Graph Theory and Computer Science. Vol. 1, edited R. C. Mullin et al., 1970.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

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

LINKS

Table of n, a(n) for n=0..7.

H. Bottomley, Illustration of initial terms

Jian Zhou, Fat and Thin Emergent Geometries of Hermitian One-Matrix Models, arXiv:1810.03883 [math-ph], 2018.

CROSSREFS

Cf. A002007, A002008, A002009, A002010.

Sequence in context: A061190 A300399 A221082 * A230129 A065101 A052739

Adjacent sequences:  A002003 A002004 A002005 * A002007 A002008 A002009

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane.

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 20 20:46 EST 2019. Contains 329347 sequences. (Running on oeis4.)