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| n | a(n) |
|---|---|
| 1 | 9 |
| 2 | 308 |
| 3 | 2605 |
| 4 | 40956 |
| 5 | 754400 |
| 6 | 11910888 |
| 7 | 203660310 |
| 8 | 3537017110 |
| 9 | 60565369990 |
| 10 | 1045806862938 |
| 11 | 18084251738021 |
| 12 | 312308093329305 |
| 13 | 5398279481935520 |
| 14 | 93321043779689016 |
| 15 | 1613067024017145514 |
| 16 | 27884806052848343672 |
[9,308,2605,40956,754400,11910888,203660310, 3537017110,60565369990,1045806862938, 18084251738021,312308093329305,5398279481935520, 93321043779689016,1613067024017145514, 27884806052848343672] |