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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 9 |
| 5 | 15 |
| 6 | 27 |
| 7 | 47 |
| 8 | 55 |
| 9 | 95 |
| 10 | 187 |
| 11 | 191 |
| 12 | 375 |
| 13 | 415 |
| 14 | 751 |
| 15 | 831 |
| 16 | 1503 |
| 17 | 1663 |
| 18 | 3007 |
| 19 | 3327 |
| 20 | 6639 |
| 21 | 7039 |
| 22 | 13279 |
| 23 | 14079 |
| 24 | 26559 |
| 25 | 28159 |
| 26 | 53119 |
| 27 | 56319 |
| 28 | 106239 |
| 29 | 112639 |
| 30 | 212479 |
| 31 | 225279 |
| 32 | 424959 |
| 33 | 450559 |
| 34 | 849919 |
| 35 | 901119 |
| 36 | 1699839 |
| 37 | 1802239 |
| 38 | 3399679 |
| 39 | 3604479 |
| 40 | 6799359 |
| 41 | 7208959 |
[1,2,3,5,9,15,27,47,55,95,187,191,375,415,751,831, 1503,1663,3007,3327,6639,7039,13279,14079,26559, 28159,53119,56319,106239,112639,212479,225279, 424959,450559,849919,901119,1699839,1802239, 3399679,3604479,6799359,7208959] |