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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 15 |
| 4 | 31 |
| 5 | 15 |
| 6 | 31 |
| 7 | 255 |
| 8 | 511 |
| 9 | 511 |
| 10 | 1023 |
| 11 | 4095 |
| 12 | 8191 |
| 13 | 6655 |
| 14 | 13311 |
| 15 | 65535 |
| 16 | 131071 |
| 17 | 261119 |
| 18 | 522239 |
| 19 | 925695 |
| 20 | 1851391 |
| 21 | 507903 |
| 22 | 1015807 |
| 23 | 14811135 |
| 24 | 29622271 |
| 25 | 8093695 |
| 26 | 16187391 |
| 27 | 236978175 |
| 28 | 473956351 |
| 29 | 134217727 |
| 30 | 268435455 |
| 31 | 3825205247 |
| 32 | 7650410495 |
| 33 | 1400897535 |
[1,1,3,15,31,15,31,255,511,511,1023,4095,8191, 6655,13311,65535,131071,261119,522239,925695, 1851391,507903,1015807,14811135,29622271,8093695, 16187391,236978175,473956351,134217727,268435455, 3825205247,7650410495,1400897535] |