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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 13 |
| 5 | 23 |
| 6 | 49 |
| 7 | 99 |
| 8 | 189 |
| 9 | 383 |
| 10 | 777 |
| 11 | 1531 |
| 12 | 3061 |
| 13 | 6167 |
| 14 | 12289 |
| 15 | 24531 |
| 16 | 49197 |
| 17 | 98351 |
| 18 | 196473 |
| 19 | 393259 |
| 20 | 786661 |
| 21 | 1572551 |
| 22 | 3145585 |
| 23 | 6292227 |
| 24 | 12582429 |
| 25 | 25164767 |
| 26 | 50333673 |
| 27 | 100663387 |
| 28 | 201322453 |
| 29 | 402657143 |
| 30 | 805310689 |
| 31 | 1610600499 |
| 32 | 3221229069 |
[1,3,7,13,23,49,99,189,383,777,1531,3061,6167, 12289,24531,49197,98351,196473,393259,786661, 1572551,3145585,6292227,12582429,25164767, 50333673,100663387,201322453,402657143,805310689, 1610600499,3221229069] |