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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 9 |
| 6 | 6 |
| 7 | 1 |
| 8 | 28 |
| 9 | 72 |
| 10 | 24 |
| 11 | 1 |
| 12 | 75 |
| 13 | 500 |
| 14 | 600 |
| 15 | 120 |
| 16 | 1 |
| 17 | 186 |
| 18 | 2700 |
| 19 | 7800 |
| 20 | 5400 |
| 21 | 720 |
| 22 | 1 |
| 23 | 441 |
| 24 | 12642 |
| 25 | 73500 |
| 26 | 117600 |
| 27 | 52920 |
| 28 | 5040 |
| 29 | 1 |
| 30 | 1016 |
| 31 | 54096 |
| 32 | 571536 |
| 33 | 1764000 |
| 34 | 1787520 |
| 35 | 564480 |
| 36 | 40320 |
| 37 | 1 |
| 38 | 2295 |
| 39 | 217800 |
| 40 | 3916080 |
| 41 | 21019824 |
| 42 | 40007520 |
| 43 | 27941760 |
| 44 | 6531840 |
| 45 | 362880 |
| 46 | 1 |
| 47 | 5110 |
| 48 | 839700 |
| 49 | 24555600 |
| 50 | 214326000 |
[1,1,2,1,9,6,1,28,72,24,1,75,500,600,120,1,186, 2700,7800,5400,720,1,441,12642,73500,117600,52920, 5040,1,1016,54096,571536,1764000,1787520,564480, 40320,1,2295,217800,3916080,21019824,40007520, 27941760,6531840,362880,1,5110,839700,24555600, 214326000] |