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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 12 |
| 5 | 45 |
| 6 | 60 |
| 7 | 245 |
| 8 | 245 |
| 9 | 504 |
| 10 | 504 |
| 11 | 5049 |
| 12 | 5049 |
| 13 | 10296 |
| 14 | 11760 |
| 15 | 11760 |
| 16 | 11760 |
| 17 | 56160 |
| 18 | 56160 |
| 19 | 198016 |
| 20 | 198016 |
| 21 | 1008159 |
| 22 | 1323008 |
| 23 | 2340849 |
| 24 | 6240366 |
| 25 | 13442580 |
| 26 | 13442580 |
| 27 | 37536408 |
| 28 | 37536408 |
| 29 | 75432065 |
| 30 | 75432065 |
| 31 | 180092645 |
| 32 | 319800096 |
| 33 | 319800096 |
| 34 | 800640126 |
| 35 | 2201169600 |
| 36 | 2201169600 |
| 37 | 3780487275 |
| 38 | 5250966084 |
| 39 | 5250966084 |
| 40 | 6832425609 |
| 41 | 36960308625 |
| 42 | 36960308625 |
| 43 | 62244072512 |
| 44 | 62244072512 |
| 45 | 62244072512 |
| 46 | 62244072512 |
| 47 | 372960042489 |
| 48 | 372960042489 |
[1,2,6,12,45,60,245,245,504,504,5049,5049,10296, 11760,11760,11760,56160,56160,198016,198016, 1008159,1323008,2340849,6240366,13442580,13442580, 37536408,37536408,75432065,75432065,180092645, 319800096,319800096,800640126,2201169600, 2201169600,3780487275,5250966084,5250966084, 6832425609,36960308625,36960308625,62244072512, 62244072512,62244072512,62244072512,372960042489, 372960042489] |