| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 6 |
| 4 | 5 |
| 5 | 1 |
| 6 | 18 |
| 7 | 21 |
| 8 | 8 |
| 9 | 1 |
| 10 | 54 |
| 11 | 81 |
| 12 | 45 |
| 13 | 11 |
| 14 | 1 |
| 15 | 162 |
| 16 | 297 |
| 17 | 216 |
| 18 | 78 |
| 19 | 14 |
| 20 | 1 |
| 21 | 486 |
| 22 | 1053 |
| 23 | 945 |
| 24 | 450 |
| 25 | 120 |
| 26 | 17 |
| 27 | 1 |
| 28 | 1458 |
| 29 | 3645 |
| 30 | 3888 |
| 31 | 2295 |
| 32 | 810 |
| 33 | 171 |
| 34 | 20 |
| 35 | 1 |
| 36 | 4374 |
| 37 | 12393 |
| 38 | 15309 |
| 39 | 10773 |
| 40 | 4725 |
| 41 | 1323 |
| 42 | 231 |
| 43 | 23 |
| 44 | 1 |
| 45 | 13122 |
| 46 | 41553 |
| 47 | 58320 |
| 48 | 47628 |
| 49 | 24948 |
| 50 | 8694 |
| 51 | 2016 |
| 52 | 300 |
| 53 | 26 |
| 54 | 1 |
[1,2,1,6,5,1,18,21,8,1,54,81,45,11,1,162,297,216, 78,14,1,486,1053,945,450,120,17,1,1458,3645,3888, 2295,810,171,20,1,4374,12393,15309,10773,4725, 1323,231,23,1,13122,41553,58320,47628,24948,8694, 2016,300,26,1] |