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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 7 |
| 4 | 13 |
| 5 | 22 |
| 6 | 34 |
| 7 | 52 |
| 8 | 79 |
| 9 | 121 |
| 10 | 184 |
| 11 | 277 |
| 12 | 418 |
| 13 | 628 |
| 14 | 943 |
| 15 | 1417 |
| 16 | 2128 |
| 17 | 3193 |
| 18 | 4792 |
| 19 | 7189 |
| 20 | 10786 |
| 21 | 16180 |
| 22 | 24271 |
| 23 | 36409 |
| 24 | 54616 |
| 25 | 81925 |
| 26 | 122890 |
| 27 | 184336 |
[1,4,7,13,22,34,52,79,121,184,277,418,628,943, 1417,2128,3193,4792,7189,10786,16180,24271,36409, 54616,81925,122890,184336] |