Basic Examples (3)
Find the coordination sequence of the Petersen graph:
Show the GraphDistanceMatrix in unsorted and sorted form:
Construct the order-7 middle levels graph (here, the middle levels are 3 and 4):
Find the coordination sequence:
The coordination sequence for any odd order middle levels graph can be found with a formula:
Find the coordination sequence for a disconnected graph:
Scope (3)
Directed graphs may be used, such as seen in CayleyGraph.
The following graph is Fibonacci to ten steps in the coordination sequence:
The following graph is tribonacci to ten steps in the coordination sequence:
The following graph is Padovan to ten steps in the coordination sequence:
Properties and Relations (2)
The coordination sequences of hypercube graphs are binomial:
The coordination sequences of the Bruhat graphs are the Mahonian numbers, A008302:
Possible Issues (4)
Multiple graphs can have the same coordination sequence:
Some graphs show different distant behaviors for every vertex:
The coordination sequence for this graph has maximal dis-coordination:
Up to 9 vertices, all regular connected graphs have the same coordination sequence for all vertices, with two exceptions:
Graphs with a specific coordination sequence are hard to find. Here are several of the form {1,3,6,x,x,4}:
Determining the existence of all {1,3,6,10,10,4} graphs currently requires a search of the 453090162062723 cubic graphs on 34 nodes.
Neat Examples (2)
Here are 947 Cayley graphs with precomputed {order, coordination sequence, generator}:
Coordination sequences have a rise followed (usually) by a fall: