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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 50 |
| 3 | 337 |
| 4 | 2278 |
| 5 | 14921 |
| 6 | 93085 |
| 7 | 541207 |
| 8 | 2909244 |
| 9 | 14424728 |
| 10 | 66153106 |
| 11 | 281891001 |
| 12 | 1122295653 |
| 13 | 4197508078 |
| 14 | 14825103751 |
| 15 | 49679349839 |
| 16 | 158631629088 |
| 17 | 484502593301 |
| 18 | 1420310391763 |
[7,50,337,2278,14921,93085,541207,2909244, 14424728,66153106,281891001,1122295653,4197508078, 14825103751,49679349839,158631629088,484502593301, 1420310391763] |