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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 17 |
| 3 | 139 |
| 4 | 1473 |
| 5 | 19091 |
| 6 | 291793 |
| 7 | 5129307 |
| 8 | 101817089 |
| 9 | 2250495523 |
| 10 | 54780588561 |
| 11 | 1455367098923 |
| 12 | 41888448785857 |
| 13 | 1298019439099059 |
| 14 | 43074477771208913 |
| 15 | 1523746948247663611 |
| 16 | 57229027745514785793 |
| 17 | 2274027983943883110467 |
[1,3,17,139,1473,19091,291793,5129307,101817089, 2250495523,54780588561,1455367098923, 41888448785857,1298019439099059,43074477771208913, 1523746948247663611,57229027745514785793, 2274027983943883110467] |