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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 2 |
| 3 | 3 |
| 4 | 2 |
| 5 | 6 |
| 6 | 3 |
| 7 | 7 |
| 8 | 43 |
| 9 | 101 |
| 10 | 1526 |
| 11 | 21626 |
| 12 | 30507 |
| 13 | 767145938 |
| 14 | 1108516909537 |
| 15 | 12667161621083528 |
[2,2,3,2,6,3,7,43,101,1526,21626,30507,767145938, 1108516909537,12667161621083528] |