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| n | a(n) |
|---|---|
| 1 | 63368 |
| 2 | 279752 |
| 3 | 949442 |
| 4 | 3220722 |
| 5 | 11082632 |
| 6 | 38438912 |
| 7 | 132454088 |
| 8 | 457591752 |
| 9 | 1580456642 |
| 10 | 5462842338 |
| 11 | 18857985218 |
| 12 | 65068116768 |
| 13 | 224346831858 |
| 14 | 774243280962 |
| 15 | 2671160165858 |
| 16 | 9217053951008 |
| 17 | 31798924865138 |
| 18 | 109735890288200 |
[63368,279752,949442,3220722,11082632,38438912, 132454088,457591752,1580456642,5462842338, 18857985218,65068116768,224346831858,774243280962, 2671160165858,9217053951008,31798924865138, 109735890288200] |