Square

Squaring a number is the process of multiplying it by itself. n squared is denoted as n². For example 4² (4 squared) is equal to 4 x 4 which is equal to 16. it can also be characterized by a unary function.

If a number is a square of an integer, it is called perfect square.

Here are the first 25 natural numbers squared:

Number	Its value squared
1	1
2	4
3	9
4	16
5	25
6	36
7	49
8	64
9	81
10	100
11	121
12	144
13	169
14	196
15	225
16	256
17	289
18	324
19	361
20	400
21	441
22	484
23	529
24	576
25	625

Uses in googology

• The original formulation of Bashicu matrix system uses squaring as its activation function.