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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 12 |
| 5 | 22 |
| 6 | 42 |
| 7 | 75 |
| 8 | 135 |
| 9 | 238 |
| 10 | 416 |
| 11 | 719 |
| 12 | 1236 |
| 13 | 2107 |
| 14 | 3574 |
| 15 | 6030 |
| 16 | 10130 |
| 17 | 16950 |
| 18 | 28267 |
| 19 | 46993 |
| 20 | 77916 |
| 21 | 128874 |
| 22 | 212701 |
| 23 | 350375 |
| 24 | 576165 |
| 25 | 945984 |
| 26 | 1551009 |
| 27 | 2539790 |
| 28 | 4154212 |
| 29 | 6787891 |
| 30 | 11081022 |
| 31 | 18074324 |
| 32 | 29458899 |
| 33 | 47981563 |
| 34 | 78102314 |
| 35 | 127060462 |
[1,3,6,12,22,42,75,135,238,416,719,1236,2107,3574, 6030,10130,16950,28267,46993,77916,128874,212701, 350375,576165,945984,1551009,2539790,4154212, 6787891,11081022,18074324,29458899,47981563, 78102314,127060462] |