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| n | a(n) |
|---|---|
| 1 | 238 |
| 2 | 1125 |
| 3 | 5567 |
| 4 | 28642 |
| 5 | 148002 |
| 6 | 771768 |
| 7 | 4034881 |
| 8 | 21118867 |
| 9 | 110669161 |
| 10 | 580192543 |
| 11 | 3042199896 |
| 12 | 15954252572 |
| 13 | 83676184647 |
| 14 | 438866555650 |
| 15 | 2301856594765 |
| 16 | 12073355842878 |
| 17 | 63325661038166 |
| 18 | 332149215192824 |
| 19 | 1742159173884376 |
[238,1125,5567,28642,148002,771768,4034881, 21118867,110669161,580192543,3042199896, 15954252572,83676184647,438866555650, 2301856594765,12073355842878,63325661038166, 332149215192824,1742159173884376] |