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| n | a(n) |
|---|---|
| 1 | 2642 |
| 2 | 10925 |
| 3 | 44795 |
| 4 | 213631 |
| 5 | 991554 |
| 6 | 4507765 |
| 7 | 20935219 |
| 8 | 97650228 |
| 9 | 454044178 |
| 10 | 2115208441 |
| 11 | 9867664386 |
| 12 | 46031851480 |
| 13 | 214761098143 |
| 14 | 1002223496523 |
| 15 | 4677320684206 |
| 16 | 21829236904579 |
| 17 | 101881854293960 |
| 18 | 475514395215723 |
[2642,10925,44795,213631,991554,4507765,20935219, 97650228,454044178,2115208441,9867664386, 46031851480,214761098143,1002223496523, 4677320684206,21829236904579,101881854293960, 475514395215723] |