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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 294 |
| 3 | 10592 |
| 4 | 433350 |
| 5 | 19269768 |
| 6 | 910578172 |
| 7 | 45070219993 |
| 8 | 2313935076132 |
| 9 | 122371149279812 |
| 10 | 6631958513821919 |
| 11 | 366896706349540194 |
| 12 | 20656935779581469141 |
| 13 | 1180759136663178459661 |
| 14 | 68388869189063880001236 |
| 15 | 4007252716834400744174729 |
| 16 | 237231272998203169561835387 |
[1,10,294,10592,433350,19269768,910578172, 45070219993,2313935076132,122371149279812, 6631958513821919,366896706349540194, 20656935779581469141,1180759136663178459661, 68388869189063880001236,4007252716834400744174729, 237231272998203169561835387] |