| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 6 |
| 3 | 24 |
| 4 | 3 |
| 5 | 15 |
| 6 | 90 |
| 7 | 5 |
| 8 | 35 |
| 9 | 315 |
| 10 | 7 |
| 11 | 70 |
| 12 | 770 |
| 13 | 10 |
| 14 | 120 |
| 15 | 4 |
| 16 | 52 |
| 17 | 728 |
| 18 | 8 |
| 19 | 128 |
| 20 | 1920 |
| 21 | 12 |
| 22 | 204 |
| 23 | 3876 |
| 24 | 17 |
| 25 | 340 |
| 26 | 7140 |
| 27 | 14 |
| 28 | 308 |
| 29 | 11 |
| 30 | 253 |
| 31 | 6072 |
| 32 | 22 |
| 33 | 550 |
| 34 | 14300 |
| 35 | 13 |
| 36 | 351 |
| 37 | 9 |
| 38 | 261 |
| 39 | 8091 |
| 40 | 29 |
| 41 | 928 |
| 42 | 16 |
| 43 | 528 |
| 44 | 17952 |
| 45 | 32 |
| 46 | 1120 |
| 47 | 20 |
| 48 | 720 |
| 49 | 18 |
| 50 | 666 |
| 51 | 25308 |
| 52 | 19 |
| 53 | 779 |
| 54 | 32718 |
| 55 | 21 |
| 56 | 903 |
| 57 | 39732 |
[1,2,6,24,3,15,90,5,35,315,7,70,770,10,120,4,52, 728,8,128,1920,12,204,3876,17,340,7140,14,308,11, 253,6072,22,550,14300,13,351,9,261,8091,29,928,16, 528,17952,32,1120,20,720,18,666,25308,19,779, 32718,21,903,39732] |