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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 5 |
| 4 | 8 |
| 5 | 8 |
| 6 | 13 |
| 7 | 13 |
| 8 | 27 |
| 9 | 27 |
| 10 | 45 |
| 11 | 53 |
| 12 | 66 |
| 13 | 109 |
| 14 | 129 |
| 15 | 147 |
| 16 | 147 |
| 17 | 170 |
| 18 | 192 |
| 19 | 250 |
| 20 | 286 |
| 21 | 317 |
[1,2,4,5,8,8,13,13,27,27,45,53,66,109,129,147,147, 170,192,250,286,317] |