Cube numbers
A number to the power of three is known as a cube number. A cube number consists of a number that you could build a cube from if you had that many smaller cubes

one cubed = 1³ = 1 x 1 x 1 = 1
two cubed = 2³ = 2 x 2 x 2 = 8
three cubed = 3³ = 3 x 3 x 3 = 27
The nth number in the sequence is given by