| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 2 |
| 6 | 1 |
| 7 | 7 |
| 8 | 14 |
| 9 | 6 |
| 10 | 1 |
| 11 | 13 |
| 12 | 42 |
| 13 | 78 |
| 14 | 24 |
| 15 | 1 |
| 16 | 21 |
| 17 | 86 |
| 18 | 258 |
| 19 | 504 |
| 20 | 120 |
| 21 | 1 |
| 22 | 31 |
| 23 | 146 |
| 24 | 546 |
| 25 | 1752 |
| 26 | 3720 |
| 27 | 720 |
| 28 | 1 |
| 29 | 43 |
| 30 | 222 |
| 31 | 942 |
| 32 | 3768 |
| 33 | 13320 |
| 34 | 30960 |
| 35 | 5040 |
| 36 | 1 |
| 37 | 57 |
| 38 | 314 |
| 39 | 1446 |
| 40 | 6552 |
| 41 | 28920 |
| 42 | 113040 |
| 43 | 287280 |
| 44 | 40320 |
| 45 | 1 |
| 46 | 73 |
| 47 | 422 |
| 48 | 2058 |
| 49 | 10104 |
| 50 | 50520 |
| 51 | 246960 |
| 52 | 1063440 |
[1,1,1,1,3,2,1,7,14,6,1,13,42,78,24,1,21,86,258, 504,120,1,31,146,546,1752,3720,720,1,43,222,942, 3768,13320,30960,5040,1,57,314,1446,6552,28920, 113040,287280,40320,1,73,422,2058,10104,50520, 246960,1063440] |