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| n | a(n) |
|---|---|
| 0 | 6 |
| 1 | 5 |
| 2 | 39 |
| 3 | 281 |
| 4 | 1779 |
| 5 | 11545 |
| 6 | 75063 |
| 7 | 487457 |
| 8 | 3165795 |
| 9 | 20561177 |
| 10 | 133539239 |
| 11 | 867300417 |
| 12 | 5632879443 |
| 13 | 36584012249 |
| 14 | 237603155031 |
| 15 | 1543167523681 |
| 16 | 10022451115715 |
| 17 | 65093079525529 |
| 18 | 422761752924807 |
| 19 | 2745721988266625 |
| 20 | 17832713542963379 |
| 21 | 115818598410317657 |
| 22 | 752210128055638071 |
[6,5,39,281,1779,11545,75063,487457,3165795, 20561177,133539239,867300417,5632879443, 36584012249,237603155031,1543167523681, 10022451115715,65093079525529,422761752924807, 2745721988266625,17832713542963379, 115818598410317657,752210128055638071] |