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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 7 |
| 4 | 13 |
| 5 | 17 |
| 6 | 19 |
| 7 | 31 |
| 8 | 61 |
| 9 | 67 |
| 10 | 127 |
| 11 | 257 |
| 12 | 1021 |
| 13 | 4093 |
| 14 | 4099 |
| 15 | 8191 |
| 16 | 16381 |
| 17 | 65537 |
| 18 | 65539 |
| 19 | 131071 |
| 20 | 262147 |
| 21 | 524287 |
| 22 | 1048573 |
| 23 | 4194301 |
| 24 | 16777213 |
| 25 | 268435459 |
| 26 | 1073741827 |
| 27 | 2147483647 |
| 28 | 2305843009213693951 |
| 29 | 19342813113834066795298819 |
[3,5,7,13,17,19,31,61,67,127,257,1021,4093,4099, 8191,16381,65537,65539,131071,262147,524287, 1048573,4194301,16777213,268435459,1073741827, 2147483647,2305843009213693951, 19342813113834066795298819] |