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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 194 |
| 3 | 2551 |
| 4 | 30074 |
| 5 | 316516 |
| 6 | 3125600 |
| 7 | 29410145 |
| 8 | 266502710 |
| 9 | 2346800921 |
| 10 | 20197483932 |
| 11 | 170598730850 |
| 12 | 1418685012262 |
| 13 | 11643287106767 |
| 14 | 94486219877716 |
| 15 | 759316584725697 |
| 16 | 6050247921127698 |
| 17 | 47847435523630798 |
| 18 | 375876383561544262 |
[9,194,2551,30074,316516,3125600,29410145, 266502710,2346800921,20197483932,170598730850, 1418685012262,11643287106767,94486219877716, 759316584725697,6050247921127698, 47847435523630798,375876383561544262] |