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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 5 |
| 3 | 11 |
| 4 | 17 |
| 5 | 37 |
| 6 | 67 |
| 7 | 131 |
| 8 | 257 |
| 9 | 521 |
| 10 | 1033 |
| 11 | 2053 |
| 12 | 4099 |
| 13 | 8209 |
| 14 | 16417 |
| 15 | 32771 |
| 16 | 65537 |
| 17 | 133121 |
| 18 | 262147 |
| 19 | 524353 |
| 20 | 1048609 |
| 21 | 2097169 |
| 22 | 4194433 |
| 23 | 8388617 |
| 24 | 16777729 |
| 25 | 33554467 |
| 26 | 67239937 |
| 27 | 134250497 |
| 28 | 268435459 |
| 29 | 536903681 |
| 30 | 1073741827 |
| 31 | 2147483713 |
[2,5,11,17,37,67,131,257,521,1033,2053,4099,8209, 16417,32771,65537,133121,262147,524353,1048609, 2097169,4194433,8388617,16777729,33554467, 67239937,134250497,268435459,536903681,1073741827, 2147483713] |