| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 5 |
| 4 | 7 |
| 5 | 53 |
| 6 | 107 |
| 7 | 25 |
| 8 | 1501 |
| 9 | 563 |
| 10 | 901 |
| 11 | 12389 |
| 12 | 16519 |
| 13 | 322121 |
| 14 | 644243 |
| 15 | 53687 |
| 16 | 1288489 |
| 17 | 3650719 |
| 18 | 4380863 |
| 19 | 18917363 |
| 20 | 3557111 |
| 21 | 104045497 |
| 22 | 416181989 |
| 23 | 2393046437 |
| 24 | 455818369 |
| 25 | 23930464373 |
| 26 | 47860928747 |
| 27 | 10255913303 |
| 28 | 11044829711 |
[1,3,5,7,53,107,25,1501,563,901,12389,16519, 322121,644243,53687,1288489,3650719,4380863, 18917363,3557111,104045497,416181989,2393046437, 455818369,23930464373,47860928747,10255913303, 11044829711] |