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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 19 |
| 4 | 195 |
| 5 | 2791 |
| 6 | 51303 |
| 7 | 1152019 |
| 8 | 30564075 |
| 9 | 935494831 |
| 10 | 32447734143 |
| 11 | 1257770533339 |
| 12 | 53884306900515 |
| 13 | 2528224238464471 |
| 14 | 128934398091500823 |
| 15 | 7101273378743303779 |
| 16 | 420078397130637237915 |
| 17 | 26563302733186339752511 |
| 18 | 1788055775343964413724143 |
| 19 | 127652707703771090396080939 |
[1,3,19,195,2791,51303,1152019,30564075,935494831, 32447734143,1257770533339,53884306900515, 2528224238464471,128934398091500823, 7101273378743303779,420078397130637237915, 26563302733186339752511,1788055775343964413724143, 127652707703771090396080939] |