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| n | a(n) |
|---|---|
| 0 | 3 |
| 1 | 15 |
| 2 | 18 |
| 3 | 33 |
| 4 | 51 |
| 5 | 84 |
| 6 | 135 |
| 7 | 219 |
| 8 | 354 |
| 9 | 573 |
| 10 | 927 |
| 11 | 1500 |
| 12 | 2427 |
| 13 | 3927 |
| 14 | 6354 |
| 15 | 10281 |
| 16 | 16635 |
| 17 | 26916 |
| 18 | 43551 |
| 19 | 70467 |
| 20 | 114018 |
| 21 | 184485 |
| 22 | 298503 |
| 23 | 482988 |
| 24 | 781491 |
| 25 | 1264479 |
| 26 | 2045970 |
| 27 | 3310449 |
| 28 | 5356419 |
| 29 | 8666868 |
| 30 | 14023287 |
| 31 | 22690155 |
| 32 | 36713442 |
| 33 | 59403597 |
| 34 | 96117039 |
| 35 | 155520636 |
[3,15,18,33,51,84,135,219,354,573,927,1500,2427, 3927,6354,10281,16635,26916,43551,70467,114018, 184485,298503,482988,781491,1264479,2045970, 3310449,5356419,8666868,14023287,22690155, 36713442,59403597,96117039,155520636] |