| n | a(n) |
|---|---|
| 1 | 15 |
| 2 | 109 |
| 3 | 109 |
| 4 | 611 |
| 5 | 1667 |
| 6 | 611 |
| 7 | 3635 |
| 8 | 26029 |
| 9 | 26029 |
| 10 | 3635 |
| 11 | 21717 |
| 12 | 411015 |
| 13 | 1060647 |
| 14 | 411015 |
| 15 | 21717 |
| 16 | 129323 |
| 17 | 6462505 |
| 18 | 44229031 |
| 19 | 44229031 |
| 20 | 6462505 |
| 21 | 129323 |
| 22 | 770747 |
| 23 | 101738935 |
| 24 | 1841606457 |
| 25 | 4894583715 |
| 26 | 1841606457 |
| 27 | 101738935 |
| 28 | 770747 |
| 29 | 4593729 |
[15,109,109,611,1667,611,3635,26029,26029,3635, 21717,411015,1060647,411015,21717,129323,6462505, 44229031,44229031,6462505,129323,770747,101738935, 1841606457,4894583715,1841606457,101738935,770747, 4593729] |