| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 4 |
| 4 | 20 |
| 5 | 6 |
| 6 | 35 |
| 7 | 8 |
| 8 | 54 |
| 9 | 60 |
| 10 | 77 |
| 11 | 12 |
| 12 | 728 |
| 13 | 14 |
| 14 | 135 |
| 15 | 128 |
| 16 | 1360 |
| 17 | 18 |
| 18 | 1881 |
| 19 | 20 |
| 20 | 2268 |
| 21 | 220 |
| 22 | 299 |
| 23 | 24 |
| 24 | 38500 |
| 25 | 260 |
| 26 | 405 |
| 27 | 336 |
| 28 | 5104 |
| 29 | 30 |
| 30 | 75361 |
| 31 | 32 |
| 32 | 7128 |
| 33 | 476 |
| 34 | 665 |
| 35 | 432 |
| 36 | 1731600 |
| 37 | 38 |
| 38 | 819 |
| 39 | 640 |
| 40 | 164164 |
| 41 | 42 |
| 42 | 218569 |
| 43 | 44 |
| 44 | 16200 |
| 45 | 11592 |
| 46 | 1175 |
| 47 | 48 |
| 48 | 5422144 |
| 49 | 700 |
| 50 | 20655 |
| 51 | 1040 |
[1,3,4,20,6,35,8,54,60,77,12,728,14,135,128,1360, 18,1881,20,2268,220,299,24,38500,260,405,336,5104, 30,75361,32,7128,476,665,432,1731600,38,819,640, 164164,42,218569,44,16200,11592,1175,48,5422144, 700,20655,1040] |