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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 9 |
| 3 | 14 |
| 4 | 29 |
| 5 | 73 |
| 6 | 165 |
| 7 | 394 |
| 8 | 1068 |
| 9 | 3018 |
| 10 | 8840 |
| 11 | 27026 |
| 12 | 84994 |
| 13 | 270787 |
| 14 | 872634 |
| 15 | 2836018 |
| 16 | 9247013 |
| 17 | 30224317 |
| 18 | 98998110 |
| 19 | 324515834 |
| 20 | 1064292227 |
| 21 | 3492203429 |
| 22 | 11460903801 |
| 23 | 37616725965 |
| 24 | 123478685661 |
| 25 | 405342852398 |
| 26 | 1330642249789 |
| 27 | 4368286232516 |
[3,9,14,29,73,165,394,1068,3018,8840,27026,84994, 270787,872634,2836018,9247013,30224317,98998110, 324515834,1064292227,3492203429,11460903801, 37616725965,123478685661,405342852398, 1330642249789,4368286232516] |