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A299028 Number of vertices in the iterated clique graphs of the 1-skeleton of Plato's icosahedron. 1
12, 20, 32, 92, 472 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

It is known that the sequence of orders of the iterated clique graphs of the icosahedron goes to infinity.

LINKS

Table of n, a(n) for n=0..4.

Miguel A. Pizaña, The icosahedron is clique divergent, Discrete Mathematics, 262 (Feb. 2003), pp. 229-239.

YAGS, YAGS - Yet Another Graph System

EXAMPLE

By definition, the zeroth iterated clique graph of a graph G is equal to G itself; since the icosahedron has 12 vertices, a(0)=12.

The first iterated clique graph of the icosahedron has 20 vertices; hence, a(1)=20.

PROG

(YAGS) K:=CliqueGraph;; g:=Icosahedron;; kg:=K(g);; Order(kg);

# It outputs the number of vertices in the first iterated

# clique graph of the icosahedron.

CROSSREFS

Cf. A299030, A063723, A053016.

Sequence in context: A269453 A082800 A026041 * A082296 A187766 A260905

Adjacent sequences:  A299025 A299026 A299027 * A299029 A299030 A299031

KEYWORD

nonn,more

AUTHOR

José Hernández, Feb 01 2018

STATUS

approved

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Last modified May 15 12:25 EDT 2021. Contains 343916 sequences. (Running on oeis4.)