A329770 Coordination sequence for trivalent vertex in 1-skeleton of triakis icosahedron.

1, 3, 15, 12, 1

Offset

0,2

Links

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

Tom Karzes, Polyhedron Coordination Sequences

N. J. A. Sloane, Triakis icosahedron showing distances from a trivalent vertex. The base vertex is labeled 0, and the vertices at distances 1, 2, and 4 are marked, as are some vertices at distance 3. Unlabeled vertices should also be labeled 3. [This image was constructed by adding labels to an image on the Wikipedia page.]

Wikipedia, Triakis icosahedron

Crossrefs

See A329772 for a 10-valent vertex.

Sequence in context: A145179 A297897 A232076 * A099476 A063628 A280201

Adjacent sequences: A329767 A329768 A329769 * A329771 A329772 A329773

Keyword

nonn,fini,full

Author

N. J. A. Sloane, Nov 25 2019

Status

approved