| Sequence | Next Number | Explanation |
| 1, 4, 9, 16 | |
| 2, 4, 8, 16, ?? | |
| 0, 1, 3, 6, 10, 15, ?? | |
| 2, 7, 17, 32, ?? | |
| 2, 3, 5, 7, 11, 13, ?? | |
| 1, 2, 6, 24, ?? | |
| 1, 1, 2, 3, 5, ?? | |
| 4, 10, 28, 82, ?? | |
| 15, 36, 58, 81, ?? | |
| 156, 84, 48, 30, ?? | |
| 14641, 1331, 121, ?? | |
| 997. 991. 983. 977, ?? | |
| 12, 34, 56, 78, ?? | |
| 2, 3, 6, 18, 108, ?? | |
| 3, 1, 4, 1, 5, 9, 2, ?? | |
| 1, 4, 27, 256, ?? | |
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