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| n | a(n) |
|---|---|
| 3 | 1 |
| 4 | 14 |
| 5 | 114 |
| 6 | 846 |
| 7 | 5217 |
| 8 | 33058 |
| 9 | 185624 |
| 10 | 1101526 |
| 11 | 5929477 |
| 12 | 34039034 |
| 13 | 179226693 |
| 14 | 1009890836 |
| 15 | 5250600651 |
| 16 | 29257284226 |
| 17 | 150953226411 |
| 18 | 835291570006 |
| 19 | 4288969189506 |
| 20 | 23626483356528 |
| 21 | 120937293900189 |
| 22 | 664239986729098 |
| 23 | 3393075842573290 |
[1,14,114,846,5217,33058,185624,1101526,5929477, 34039034,179226693,1009890836,5250600651, 29257284226,150953226411,835291570006, 4288969189506,23626483356528,120937293900189, 664239986729098,3393075842573290] |