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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 7 |
| 4 | 52 |
| 5 | 851 |
| 6 | 28786 |
| 7 | 1933879 |
| 8 | 255839048 |
| 9 | 66839167987 |
| 10 | 34634544150646 |
| 11 | 35712147523562999 |
| 12 | 73426704068062929628 |
| 13 | 301419821377908100819123 |
| 14 | 2472253358027383404798964442 |
| 15 | 40532633024489540112983979301783 |
| 16 | 1328660090565074145503909701745941840 |
[1,2,7,52,851,28786,1933879,255839048,66839167987, 34634544150646,35712147523562999, 73426704068062929628,301419821377908100819123, 2472253358027383404798964442, 40532633024489540112983979301783, 1328660090565074145503909701745941840] |