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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 2 |
| 6 | 1 |
| 7 | 3 |
| 8 | 6 |
| 9 | 6 |
| 10 | 1 |
| 11 | 4 |
| 12 | 10 |
| 13 | 24 |
| 14 | 24 |
| 15 | 1 |
| 16 | 5 |
| 17 | 14 |
| 18 | 42 |
| 19 | 120 |
| 20 | 120 |
| 21 | 1 |
| 22 | 6 |
| 23 | 18 |
| 24 | 60 |
| 25 | 216 |
| 26 | 720 |
| 27 | 720 |
| 28 | 1 |
| 29 | 7 |
| 30 | 22 |
| 31 | 78 |
| 32 | 312 |
| 33 | 1320 |
| 34 | 5040 |
| 35 | 5040 |
| 36 | 1 |
| 37 | 8 |
| 38 | 26 |
| 39 | 96 |
| 40 | 408 |
| 41 | 1920 |
| 42 | 9360 |
| 43 | 40320 |
| 44 | 40320 |
| 45 | 1 |
| 46 | 9 |
| 47 | 30 |
| 48 | 114 |
| 49 | 504 |
| 50 | 2520 |
| 51 | 13680 |
| 52 | 75600 |
| 53 | 362880 |
| 54 | 362880 |
[1,1,1,1,2,2,1,3,6,6,1,4,10,24,24,1,5,14,42,120, 120,1,6,18,60,216,720,720,1,7,22,78,312,1320,5040, 5040,1,8,26,96,408,1920,9360,40320,40320,1,9,30, 114,504,2520,13680,75600,362880,362880] |