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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 81 |
| 3 | 2917 |
| 4 | 186689 |
| 5 | 18668901 |
| 6 | 2688321745 |
| 7 | 526911062021 |
| 8 | 134889231877377 |
| 9 | 43704111128270149 |
| 10 | 17481644451308059601 |
| 11 | 8461115914433100846885 |
| 12 | 4873602766713466087805761 |
| 13 | 3294555470298303075356694437 |
| 14 | 2582931488713869611079648438609 |
| 15 | 2324638339842482649971683594748101 |
[1,5,81,2917,186689,18668901,2688321745, 526911062021,134889231877377,43704111128270149, 17481644451308059601,8461115914433100846885, 4873602766713466087805761, 3294555470298303075356694437, 2582931488713869611079648438609, 2324638339842482649971683594748101] |