login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A199140 Number of assembly graphs with n rigid vertices and no crossings. 0
3, 9, 43, 217, 1328, 19700 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,1

COMMENTS

See Burns et al. links for precise definition.

LINKS

Table of n, a(n) for n=2..7.

Jonathan Burns, Assembly Graph Words - Single Transverse Component (Counts).

Jonathan Burns, Egor Dolzhenko, Natasa Jonoska, Tilahun Muche, and Masahico Saito, Four-Regular Graphs with Rigid Vertices Associated to DNA Recombination, May 23, 2011.

CROSSREFS

Sequence in context: A141349 A018427 A275781 * A154606 A232216 A167143

Adjacent sequences:  A199137 A199138 A199139 * A199141 A199142 A199143

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Nov 03 2011

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 October 21 21:22 EDT 2021. Contains 348155 sequences. (Running on oeis4.)