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| n | a(n) |
|---|---|
| 1 | 1333 |
| 2 | 4750 |
| 3 | 14196 |
| 4 | 39003 |
| 5 | 102789 |
| 6 | 265546 |
| 7 | 680504 |
| 8 | 1742387 |
| 9 | 4479925 |
| 10 | 11612686 |
| 11 | 30445732 |
| 12 | 80928947 |
| 13 | 218431629 |
| 14 | 598934874 |
| 15 | 1667663960 |
| 16 | 4709666459 |
| 17 | 13467918413 |
| 18 | 38924144238 |
| 19 | 113481270292 |
| 20 | 333163706923 |
| 21 | 983467807413 |
| 22 | 2915295816330 |
[1333,4750,14196,39003,102789,265546,680504, 1742387,4479925,11612686,30445732,80928947, 218431629,598934874,1667663960,4709666459, 13467918413,38924144238,113481270292,333163706923, 983467807413,2915295816330] |