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| n | a(n) |
|---|---|
| 7 | 6 |
| 8 | 21 |
| 9 | 188 |
| 10 | 791 |
| 11 | 4696 |
| 12 | 21614 |
| 13 | 109745 |
| 14 | 513421 |
| 15 | 2557358 |
| 16 | 11885545 |
| 17 | 58291639 |
| 18 | 275421640 |
| 19 | 1342532532 |
| 20 | 6411950652 |
| 21 | 31310737486 |
| 22 | 151220406569 |
| 23 | 742729520457 |
| 24 | 3625802212441 |
| 25 | 17956348335989 |
| 26 | 88575381634494 |
| 27 | 442565032597013 |
| 28 | 2207206278880826 |
| 29 | 11138577085071310 |
[6,21,188,791,4696,21614,109745,513421,2557358, 11885545,58291639,275421640,1342532532,6411950652, 31310737486,151220406569,742729520457, 3625802212441,17956348335989,88575381634494, 442565032597013,2207206278880826, 11138577085071310] |