A135531 Number of connected homogeneous graphs with 6 nodes and valency n.

51, 117020, 42722972, 5554560632, 355631996061, 13505066262007

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