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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 9 |
| 4 | 27 |
| 5 | 225 |
| 6 | 30375 |
| 7 | 7441875 |
| 8 | 1071875 |
| 9 | 1181472075 |
| 10 | 232602314765625 |
| 11 | 7296820763203125 |
| 12 | 1228777319702643046875 |
| 13 | 407740293448065703125 |
| 14 | 12646770836979187723815 |
| 15 | 13904872587870848957579157123046875 |
| 16 | 89477855102948913042021876086806640625 |
| 17 | 3865644245069923858264226752294921875 |
| 18 | 18203690021177687874093952515006818038631103515625 |
[1,1,1,9,27,225,30375,7441875,1071875,1181472075, 232602314765625,7296820763203125, 1228777319702643046875,407740293448065703125, 12646770836979187723815, 13904872587870848957579157123046875, 89477855102948913042021876086806640625, 3865644245069923858264226752294921875, 18203690021177687874093952515006818038631103515625\ ] |