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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 17 |
| 3 | 29 |
| 4 | 97 |
| 5 | 193 |
| 6 | 257 |
| 7 | 641 |
| 8 | 12289 |
| 9 | 22993 |
| 10 | 65537 |
| 11 | 102593 |
| 12 | 115201 |
| 13 | 152833 |
| 14 | 211457 |
| 15 | 993793 |
| 16 | 5189633 |
| 17 | 26411009 |
| 18 | 79280897 |
| 19 | 93847553 |
| 20 | 167772161 |
| 21 | 230686721 |
| 22 | 1364951041 |
| 23 | 1573071713 |
| 24 | 3221225473 |
| 25 | 5488091137 |
| 26 | 186678460417 |
| 27 | 206158430209 |
| 28 | 274568286337 |
[7,17,29,97,193,257,641,12289,22993,65537,102593, 115201,152833,211457,993793,5189633,26411009, 79280897,93847553,167772161,230686721,1364951041, 1573071713,3221225473,5488091137,186678460417, 206158430209,274568286337] |