The document consists of a series of numbers ranging from 1 to 18. There is no additional context or information provided. This suggests it may be a simple list or a representation of a sequence.

1. 1

2. 2

3. 3

4. 4

5. 5

6. 6

7. 7

8. 8

9. 9

10.
10

11.
11

12.
12

13.
13

14.
14

15.
15

16.
16

17.
17

18.
18