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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 3 |
| 5 | 2 |
| 6 | 15 |
| 7 | 15 |
| 8 | 12 |
| 9 | 6 |
| 10 | 105 |
| 11 | 105 |
| 12 | 90 |
| 13 | 60 |
| 14 | 24 |
| 15 | 945 |
| 16 | 945 |
| 17 | 840 |
| 18 | 630 |
| 19 | 360 |
| 20 | 120 |
| 21 | 10395 |
| 22 | 10395 |
| 23 | 9450 |
| 24 | 7560 |
| 25 | 5040 |
| 26 | 2520 |
| 27 | 720 |
| 28 | 135135 |
| 29 | 135135 |
| 30 | 124740 |
| 31 | 103950 |
| 32 | 75600 |
| 33 | 45360 |
| 34 | 20160 |
| 35 | 5040 |
| 36 | 2027025 |
| 37 | 2027025 |
| 38 | 1891890 |
| 39 | 1621620 |
| 40 | 1247400 |
| 41 | 831600 |
| 42 | 453600 |
| 43 | 181440 |
| 44 | 40320 |
[1,1,1,3,3,2,15,15,12,6,105,105,90,60,24,945,945, 840,630,360,120,10395,10395,9450,7560,5040,2520, 720,135135,135135,124740,103950,75600,45360,20160, 5040,2027025,2027025,1891890,1621620,1247400, 831600,453600,181440,40320] |