| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 72 |
| 3 | 1747 |
| 4 | 16584 |
| 5 | 208559 |
| 6 | 2207352 |
| 7 | 22998587 |
| 8 | 236744562 |
| 9 | 2372235577 |
| 10 | 23556868268 |
| 11 | 231170201002 |
| 12 | 2248366154372 |
| 13 | 21712536566614 |
| 14 | 208339762352392 |
| 15 | 1988486114090520 |
| 16 | 18890627682669588 |
| 17 | 178728457004534603 |
[5,72,1747,16584,208559,2207352,22998587, 236744562,2372235577,23556868268,231170201002, 2248366154372,21712536566614,208339762352392, 1988486114090520,18890627682669588, 178728457004534603] |