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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 16 |
| 6 | 21 |
| 7 | 64 |
| 8 | 512 |
| 9 | 4096 |
| 10 | 29127 |
| 11 | 65536 |
| 12 | 262144 |
| 13 | 1073741824 |
| 14 | 355744082763 |
[1,2,4,8,16,21,64,512,4096,29127,65536,262144, 1073741824,355744082763] |