A393693 Number of open Platonic solids in the order tetrahedron, cube, octahedron, dodecahedron, icosahedron.

6, 122, 185, 2423206, 16096166

Offset

1,1

Links

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

Mikael Vejdemo-Johansson, Incomplete Open Platonic Solids, arXiv:2602.20425 [math.CO], 2026.

Example

a(2) = A222186(3) - 1 (excluding the complete cube).

Crossrefs

Cf. A053016, A063723, A222186, A393969.

Sequence in context: A126244 A336808 A393856 * A296801 A249168 A360576

Adjacent sequences: A393690 A393691 A393692 * A393694 A393695 A393696

Keyword

nonn,fini,full

Author

Michel Marcus, Feb 25 2026

Status

approved