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| n | a(n) |
|---|---|
| 1 | 12 |
| 2 | 43 |
| 3 | 115 |
| 4 | 339 |
| 5 | 1047 |
| 6 | 3185 |
| 7 | 9614 |
| 8 | 28997 |
| 9 | 87432 |
| 10 | 263315 |
| 11 | 792052 |
| 12 | 2380535 |
| 13 | 7151068 |
| 14 | 21473847 |
| 15 | 64465845 |
| 16 | 193491115 |
| 17 | 580670152 |
| 18 | 1742425277 |
| 19 | 5228150762 |
| 20 | 15686292673 |
| 21 | 47062736335 |
| 22 | 141196283037 |
| 23 | 423605734627 |
| 24 | 1270852497809 |
| 25 | 3812631196199 |
[12,43,115,339,1047,3185,9614,28997,87432,263315, 792052,2380535,7151068,21473847,64465845, 193491115,580670152,1742425277,5228150762, 15686292673,47062736335,141196283037,423605734627, 1270852497809,3812631196199] |