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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 2 |
| 3 | 2 |
| 4 | 2 |
| 5 | 1447 |
| 6 | 9769 |
| 7 | 17231 |
| 8 | 17231 |
| 9 | 32611 |
| 10 | 18527009 |
| 11 | 161205841 |
| 12 | 3123824801 |
| 13 | 26813406071 |
| 14 | 4398156030379 |
| 15 | 4398156030379 |
[2,2,2,2,1447,9769,17231,17231,32611,18527009, 161205841,3123824801,26813406071,4398156030379, 4398156030379] |