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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 5 |
| 4 | 8 |
| 5 | 11 |
| 6 | 13 |
| 7 | 19 |
| 8 | 23 |
| 9 | 32 |
| 10 | 55 |
| 11 | 59 |
| 12 | 173 |
| 13 | 199 |
| 14 | 386 |
| 15 | 425 |
| 16 | 494 |
| 17 | 758 |
| 18 | 2473 |
| 19 | 4154 |
| 20 | 15355 |
| 21 | 47399 |
| 22 | 122933 |
[1,2,5,8,11,13,19,23,32,55,59,173,199,386,425,494, 758,2473,4154,15355,47399,122933] |