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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 75 |
| 4 | 2205 |
| 5 | 25515 |
| 6 | 1715175 |
| 7 | 79053975 |
| 8 | 9577693125 |
| 9 | 184530220875 |
| 10 | 35266981624875 |
| 11 | 4092826025413125 |
| 12 | 66711917764366875 |
| 13 | 92454016466921484375 |
| 14 | 35047468562280596296875 |
| 15 | 7641646200968365570359375 |
| 16 | 3798425171964103092990703125 |
| 17 | 133435000395771234460221796875 |
[1,9,75,2205,25515,1715175,79053975,9577693125, 184530220875,35266981624875,4092826025413125, 66711917764366875,92454016466921484375, 35047468562280596296875,7641646200968365570359375, 3798425171964103092990703125, 133435000395771234460221796875] |