OFFSET
1,1
COMMENTS
The regular-faced convex polyhedra other than prisms and antiprisms are the Platonic, Archimedean, and Johnson solids.
LINKS
FORMULA
a(n) = 0 for n >= 5.
EXAMPLE
Each of the five Platonic solids, and each of five Johnson solids, has one type of face, so a(1) = 5 + 5 = 10.
Each of ten Archimedean solids, and each of thirty-five Johnson solids, has two types of faces, so a(2) = 10 + 35 = 45.
Each of three Archimedean solids, and each of thirty-five Johnson solids, has three types of faces, so a(3) = 3 + 35 = 38.
Each of seventeen Johnson solids has four types of faces, so a(4) = 17.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jonathan Sondow, Feb 11 2018
STATUS
approved