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| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 61 |
| 3 | 863 |
| 4 | 5231 |
| 5 | 84859 |
| 6 | 532537 |
| 7 | 3432203 |
| 8 | 255634241 |
| 9 | 4594884299 |
| 10 | 44139608287 |
| 11 | 644772297031 |
| 12 | 33055909092211 |
| 13 | 271103095974079 |
| 14 | 93380069969929969 |
| 15 | 1151842860713446127 |
| 16 | 22664072571698543617 |
| 17 | 2801339281067798957117 |
| 18 | 137197247292115717439959 |
[19,61,863,5231,84859,532537,3432203,255634241, 4594884299,44139608287,644772297031, 33055909092211,271103095974079,93380069969929969, 1151842860713446127,22664072571698543617, 2801339281067798957117,137197247292115717439959] |