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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 23 |
| 3 | 31 |
| 4 | 47 |
| 5 | 71 |
| 6 | 79 |
| 7 | 263 |
| 8 | 271 |
| 9 | 1031 |
| 10 | 1039 |
| 11 | 2063 |
| 12 | 4111 |
| 13 | 32783 |
| 14 | 65543 |
| 15 | 65551 |
| 16 | 262151 |
| 17 | 1048583 |
| 18 | 4194319 |
| 19 | 8388623 |
| 20 | 67108879 |
| 21 | 268435463 |
| 22 | 1073741831 |
| 23 | 1073741839 |
| 24 | 4294967311 |
[7,23,31,47,71,79,263,271,1031,1039,2063,4111, 32783,65543,65551,262151,1048583,4194319,8388623, 67108879,268435463,1073741831,1073741839, 4294967311] |