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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 5 |
| 4 | 9 |
| 5 | 17 |
| 6 | 32 |
| 7 | 59 |
| 8 | 107 |
| 9 | 194 |
| 10 | 354 |
| 11 | 648 |
| 12 | 1186 |
| 13 | 2169 |
| 14 | 3964 |
| 15 | 7243 |
| 16 | 13237 |
| 17 | 24196 |
| 18 | 44230 |
| 19 | 80849 |
| 20 | 147780 |
| 21 | 270117 |
| 22 | 493731 |
| 23 | 902469 |
| 24 | 1649589 |
| 25 | 3015219 |
| 26 | 5511391 |
| 27 | 10074030 |
| 28 | 18413879 |
| 29 | 33657935 |
| 30 | 61521899 |
| 31 | 112453248 |
| 32 | 205548470 |
| 33 | 375713217 |
[1,2,3,5,9,17,32,59,107,194,354,648,1186,2169, 3964,7243,13237,24196,44230,80849,147780,270117, 493731,902469,1649589,3015219,5511391,10074030, 18413879,33657935,61521899,112453248,205548470, 375713217] |