| Sequence | Next number | Rule |
| 3,6,9,12, | |
| 1,1,2,3,5,8, | |
| 1,4,9,16, | |
| 2,3,5,7,11,13, | |
| 1,2,6,24,120, | |
| 2,4,8,16,32, | |
| 1,3,6,10,15, | |
| 1,4,10,20,35, | |
| 320,240,180, | |
| 1,5,14,30, | |
| 688,384,96,54, | |
| 1,2,10,11,12,20, | |
| 8,7,5,2,7,9,6, | |
| 1,2,3,6,11,20, | |
| 8,9,11,15,23, | |
| 11,13,17,25,32, | |
| 91,21,14,43, | |
| 98,51,18,27, | |
| 72,53,34,25,29, | |
| 7,26,63,124, | |
|