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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 24 |
| 2 | 381 |
| 3 | 5056 |
| 4 | 60837 |
| 5 | 689640 |
| 6 | 7521277 |
| 7 | 79922832 |
| 8 | 834214293 |
| 9 | 8599137976 |
| 10 | 87862904493 |
| 11 | 892165074528 |
| 12 | 9019015091269 |
| 13 | 90887374167432 |
| 14 | 913848341454429 |
| 15 | 9173869834986544 |
| 16 | 91989788624850165 |
| 17 | 921675830164728408 |
[1,24,381,5056,60837,689640,7521277,79922832, 834214293,8599137976,87862904493,892165074528, 9019015091269,90887374167432,913848341454429, 9173869834986544,91989788624850165, 921675830164728408] |