| n | a(n) |
|---|---|
| 1 | 11 |
| 2 | 57 |
| 3 | 1191 |
| 4 | 15619 |
| 5 | 4293 |
| 6 | 247 |
| 7 | 1013 |
| 8 | 152637 |
| 9 | 10187685 |
| 10 | 478271 |
| 11 | 4083 |
| 12 | 423281535 |
| 13 | 12843262863 |
| 14 | 2571742175 |
| 15 | 16369 |
| 16 | 311387598411 |
| 17 | 15041229521 |
| 18 | 13824739 |
| 19 | 6382798925475 |
| 20 | 3207483178157 |
| 21 | 782115518299 |
| 22 | 85383238549 |
| 23 | 3572085255 |
[11,57,1191,15619,4293,247,1013,152637,10187685, 478271,4083,423281535,12843262863,2571742175, 16369,311387598411,15041229521,13824739, 6382798925475,3207483178157,782115518299, 85383238549,3572085255] |