| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 37 |
| 5 | 185 |
| 6 | 982 |
| 7 | 5491 |
| 8 | 30634 |
| 9 | 177213 |
| 10 | 1046962 |
| 11 | 6298375 |
| 12 | 38673066 |
| 13 | 239176117 |
| 14 | 1493154690 |
| 15 | 9380538425 |
| 16 | 59332570286 |
| 17 | 377865591909 |
[1,3,7,37,185,982,5491,30634,177213,1046962, 6298375,38673066,239176117,1493154690,9380538425, 59332570286,377865591909] |