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| n | a(n) |
|---|---|
| 1 | 1517 |
| 2 | 8374 |
| 3 | 50529 |
| 4 | 305347 |
| 5 | 1839784 |
| 6 | 11172263 |
| 7 | 67724531 |
| 8 | 410177144 |
| 9 | 2486962308 |
| 10 | 15075219306 |
| 11 | 91365402832 |
| 12 | 553811854726 |
| 13 | 3356885567485 |
| 14 | 20346820069282 |
| 15 | 123328702944406 |
| 16 | 747537064469943 |
| 17 | 4531048838872687 |
| 18 | 27464108126394996 |
[1517,8374,50529,305347,1839784,11172263,67724531, 410177144,2486962308,15075219306,91365402832, 553811854726,3356885567485,20346820069282, 123328702944406,747537064469943,4531048838872687, 27464108126394996] |