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| n | a(n) |
|---|---|
| 1 | 123 |
| 2 | 1182 |
| 3 | 9514 |
| 4 | 67130 |
| 5 | 427059 |
| 6 | 2495541 |
| 7 | 13620058 |
| 8 | 70213894 |
| 9 | 344898281 |
| 10 | 1625999707 |
| 11 | 7398978182 |
| 12 | 32644783397 |
| 13 | 140193521403 |
| 14 | 587883227613 |
| 15 | 2413542952866 |
| 16 | 9723315619156 |
| 17 | 38513619901599 |
| 18 | 150236979229584 |
[123,1182,9514,67130,427059,2495541,13620058, 70213894,344898281,1625999707,7398978182, 32644783397,140193521403,587883227613, 2413542952866,9723315619156,38513619901599, 150236979229584] |