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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A135531 Number of connected homogeneous graphs with 6 nodes and valency n. 0
51, 117020, 42722972, 5554560632, 355631996061, 13505066262007 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..6.

Falih Aldosray and Ian Stewart, Enumeration of Homogeneous Coupled Cell Networks, International Journal of Bifurcation and Chaos, Vol. 15, No. 8 (2005) 2361-2373, Table 3, p. 2372.

EXAMPLE

This is the 6th row of the array from Aldosray and Stewart:

============================================================================

Nodes.|.valency.............................................................

=====.|.v=1.|....v=2.|......v=3.|........v=4.|..........v=5.|............v=6

1.....|..1..|......1.|........1.|..........1.|............1.|..............1

2.....|..2..|......5.|........9.|.........14.|...........20.|.............27

3.....|..4..|.....38.|......170.|........575.|.........1561.|...........3696

4.....|..9..|....416.|.....6690.|......62725.|.......410438.|........2076725

5.....|.20..|...6209.|...436277.|...14000798.|....264632734.|.....3403484793

6.....|.51..|.117020.|.42722972.|.5554560632.|.355631996061.|.13505066262007

============================================================================

CROSSREFS

Sequence in context: A198904 A238567 A198251 * A038777 A281979 A172695

Adjacent sequences:  A135528 A135529 A135530 * A135532 A135533 A135534

KEYWORD

nonn

AUTHOR

Jonathan Vos Post, Feb 20 2008

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 March 19 17:21 EDT 2019. Contains 321330 sequences. (Running on oeis4.)