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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 19 |
| 4 | 53 |
| 5 | 163 |
| 6 | 485 |
| 7 | 1459 |
| 8 | 4373 |
| 9 | 13123 |
| 10 | 39365 |
| 11 | 118099 |
| 12 | 354293 |
| 13 | 1062883 |
| 14 | 3188645 |
| 15 | 9565939 |
| 16 | 28697813 |
| 17 | 86093443 |
| 18 | 258280325 |
| 19 | 774840979 |
| 20 | 2324522933 |
| 21 | 6973568803 |
| 22 | 20920706405 |
| 23 | 62762119219 |
| 24 | 188286357653 |
| 25 | 564859072963 |
[3,5,19,53,163,485,1459,4373,13123,39365,118099, 354293,1062883,3188645,9565939,28697813,86093443, 258280325,774840979,2324522933,6973568803, 20920706405,62762119219,188286357653,564859072963] |