A327888 Orders of cubic (i.e., trivalent, 3-regular) distance-regular graphs.

4, 6, 8, 10, 14, 18, 20, 20, 28, 30, 90, 102, 126

Offset

1,1

Comments

"Order" is the number of vertices. Terms are listed from smallest to largest, with duplications when there exist multiple graphs with the same order.

Links

Table of n, a(n) for n=1..13.

Wikipedia, Cubic distance-regular graphs

Example

4 is a term because the tetrahedron graph is cubic and distance-regular and has order 4.
20 is a term because the dodecahedron graph is cubic and distance-regular and has order 20.

Crossrefs

Cf. A328144 (cubic distance-transitive graphs), A075124 (cubic symmetric graphs).

Sequence in context: A067315 A069148 A328144 * A103800 A022449 A088686

Adjacent sequences: A327885 A327886 A327887 * A327889 A327890 A327891

Keyword

nonn,fini,full

Author

Harry Richman, Sep 29 2019

Status

approved