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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 33 |
| 3 | 298 |
| 4 | 2649 |
| 5 | 23711 |
| 6 | 215341 |
| 7 | 1982296 |
| 8 | 18447847 |
| 9 | 173197435 |
| 10 | 1637524156 |
| 11 | 15570196516 |
| 12 | 148735628858 |
| 13 | 1426303768587 |
| 14 | 13722207893214 |
| 15 | 132387231596281 |
| 16 | 1280309591127436 |
[3,33,298,2649,23711,215341,1982296,18447847, 173197435,1637524156,15570196516,148735628858, 1426303768587,13722207893214,132387231596281, 1280309591127436] |