A063722 Number of edges in the Platonic solids (in the order tetrahedron, cube, octahedron, dodecahedron, icosahedron).

6, 12, 12, 30, 30

Offset: 1

Author

Henry Bottomley, Aug 14 2001

Keywords

• easy
• fini
• full
• nonn

Examples

			a(2) = 12 since a cube has twelve edges.
		

Links

• Eric Weisstein's World of Mathematics, Platonic Solid

Crossrefs

Cf. A053012, A060296, A060852.

Formula

a(n) = A053016(n)+A063723(n)-2.