Decagonal

Decagonal Number

Decagonal Tile

2000 (number)

3000 (number)

6000 (number)

7000 (number)

Centered Heptagonal Number

Centered Square Number

Highly Cototient Number

Pronic Number

Triangular Number

Uniform Polyhedra

Dihedron

Germain

Integers

Member

Number

Octagonal

Pentagonal

Pronic

Sphenic

Square