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| n | a(n) |
|---|---|
| 1 | 16 |
| 2 | 357 |
| 3 | 4754 |
| 4 | 49503 |
| 5 | 439446 |
| 6 | 3438414 |
| 7 | 24103803 |
| 8 | 153073965 |
| 9 | 888863183 |
| 10 | 4758719096 |
| 11 | 23665023516 |
| 12 | 110046094356 |
| 13 | 481337375925 |
| 14 | 1990600963219 |
| 15 | 7819169497216 |
| 16 | 29290369365213 |
| 17 | 105007107699726 |
| 18 | 361416768054859 |
[16,357,4754,49503,439446,3438414,24103803, 153073965,888863183,4758719096,23665023516, 110046094356,481337375925,1990600963219, 7819169497216,29290369365213,105007107699726, 361416768054859] |