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

6, 12, 12, 30, 30

Offset

1,1

Links

Table of n, a(n) for n=1..5.

Eric Weisstein's World of Mathematics, Platonic Solid

Formula

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

Example

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

Crossrefs

Cf. A053012, A060296, A060852.

Sequence in context: A223352 A063648 A331209 * A323058 A072294 A181797

Adjacent sequences: A063719 A063720 A063721 * A063723 A063724 A063725

Keyword

easy,fini,full,nonn

Author

Henry Bottomley, Aug 14 2001

Status

approved