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| n | a(n) |
|---|---|
| 2 | 3 |
| 3 | 7 |
| 4 | 43 |
| 5 | 198 |
| 6 | 926 |
| 7 | 5199 |
| 8 | 33723 |
| 9 | 219611 |
| 10 | 1410817 |
| 11 | 9288667 |
| 12 | 62482152 |
| 13 | 424683884 |
| 14 | 2910675140 |
| 15 | 20114908457 |
| 16 | 140063531023 |
[3,7,43,198,926,5199,33723,219611,1410817,9288667, 62482152,424683884,2910675140,20114908457, 140063531023] |