The first coluumn is a count of the rows
The second column starts with one and each subsequent row is the row above it doubled, that is multiple by 2
Many things.
One example is if you talk to 2 people about something and ask them to tell 2 other people about it.
How many times does that have to happen (iterations) before 10 or more people no about it. Or all the people in your country, or all the people in the world? Look down the table to see.
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 32 |
| 7 | 64 |
| 8 | 128 |
| 9 | 256 |
| 10 | 512 |
| 11 | 1,024 |
| 12 | 2,048 |
| 13 | 4,096 |
| 14 | 8,192 |
| 15 | 16,384 |
| 16 | 32,768 |
| 17 | 65,536 |
| 18 | 131,072 |
| 19 | 262,144 |
| 20 | 524,288 |
| 21 | 1,048,576 |
| 22 | 2,097,152 |
| 23 | 4,194,304 |
| 24 | 8,388,608 |
| 25 | 16,777,216 |
| 26 | 33,554,432 |
| 27 | 67,108,864 |
| 28 | 134,217,728 |
| 29 | 268,435,456 |
| 30 | 536,870,912 |
| 31 | 1,073,741,824 |
| 32 | 2,147,483,648 |
| 33 | 4,294,967,296 |
| 34 | 8,589,934,592 |
| 35 | 17,179,869,184 |