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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 41 |
| 3 | 265 |
| 4 | 1736 |
| 5 | 11857 |
| 6 | 85007 |
| 7 | 639753 |
| 8 | 5045602 |
| 9 | 41615156 |
| 10 | 358185389 |
| 11 | 3210667479 |
| 12 | 29914284821 |
| 13 | 289187621887 |
[6,41,265,1736,11857,85007,639753,5045602, 41615156,358185389,3210667479,29914284821, 289187621887] |