Hansen Chain
An Addition Chain for which there is a Subset 
of members such that each member of the chainuses the largest element of which is less than the member.
References
Guy, R. K. ``Addition Chains. Brauer Chains. Hansen Chains.'' §C6 in Unsolved Problems in Number Theory, 2nd ed. New York: Springer-Verlag, pp. 111-113, 1994.
- Great Rhombicosidodecahedron (Archimedean)
- Great Rhombicosidodecahedron (Uniform)
- Great Rhombic Triacontahedron
- Great Rhombicuboctahedron (Archimedean)
- Great Rhombicuboctahedron (Uniform)
- Great Rhombidodecacron
- Great Rhombidodecahedron
- Great Rhombihexacron
- Great Rhombihexahedron
- Great Snub Dodecicosidodecahedron
- Great Snub Icosidodecahedron
- Great Sphere
- Great Stellapentakis Dodecahedron
- Great Stellated Dodecahedron
- Great Stellated Triacontahedron
- Great Stellated Truncated Dodecahedron
- Great Triakis Icosahedron
- Great Triakis Octahedron
- Great Triambic Icosahedron
- Great Truncated Cuboctahedron
- Great Truncated Icosahedron
- Great Truncated Icosidodecahedron
- Grebe Point
- Greedy Algorithm
- Greek Cross