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%I #20 Jan 08 2020 19:16:23
%S 1,3,15,12,1
%N Coordination sequence for trivalent vertex in 1-skeleton of triakis icosahedron.
%H Tom Karzes, <a href="/A298808/a298808.html">Polyhedron Coordination Sequences</a>
%H N. J. A. Sloane, <a href="/A329770/a329770_1.pdf">Triakis icosahedron showing distances from a trivalent vertex</a>. 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.]
%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Triakis_icosahedron">Triakis icosahedron</a>
%Y See A329772 for a 10-valent vertex.
%K nonn,fini,full
%O 0,2
%A _N. J. A. Sloane_, Nov 25 2019