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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 19 |
| 4 | 243 |
| 5 | 6227 |
| 6 | 319251 |
| 7 | 32737427 |
| 8 | 6714170259 |
| 9 | 2754046149011 |
| 10 | 2259333156408723 |
| 11 | 3706972573115098515 |
| 12 | 12164337831474297132435 |
| 13 | 79833941280970262512121235 |
| 14 | 1047892334589811621056371520915 |
[1,1,3,19,243,6227,319251,32737427,6714170259, 2754046149011,2259333156408723, 3706972573115098515,12164337831474297132435, 79833941280970262512121235, 1047892334589811621056371520915] |