| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 19 |
| 6 | 79 |
| 7 | 333 |
| 8 | 1393 |
| 9 | 5725 |
| 10 | 23408 |
| 11 | 94067 |
| 12 | 372806 |
| 13 | 1452902 |
| 14 | 5573547 |
| 15 | 21048926 |
| 16 | 78294082 |
| 17 | 286989576 |
| 18 | 1037232520 |
| 19 | 3698189056 |
| 20 | 13015198750 |
| 21 | 45236281727 |
| 22 | 155352127515 |
| 23 | 527417864879 |
| 24 | 1770921102747 |
[1,1,3,5,19,79,333,1393,5725,23408,94067,372806, 1452902,5573547,21048926,78294082,286989576, 1037232520,3698189056,13015198750,45236281727, 155352127515,527417864879,1770921102747] |