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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 4 |
| 4 | 3 |
| 5 | 48 |
| 6 | 5 |
| 7 | 120 |
| 8 | 105 |
| 9 | 560 |
| 10 | 63 |
| 11 | 25200 |
| 12 | 385 |
| 13 | 332640 |
| 14 | 19305 |
| 15 | 64064 |
| 16 | 45045 |
| 17 | 11531520 |
| 18 | 85085 |
| 19 | 73513440 |
| 20 | 2909907 |
| 21 | 14780480 |
| 22 | 6613425 |
| 23 | 113809696 |
| 24 | 37182145 |
| 25 | 475931456 |
| 26 | 386122275 |
| 27 | 5949143200 |
| 28 | 2151252675 |
| 29 | 2248776129600 |
| 30 | 215656441 |
[1,1,4,3,48,5,120,105,560,63,25200,385,332640, 19305,64064,45045,11531520,85085,73513440,2909907, 14780480,6613425,113809696,37182145,475931456, 386122275,5949143200,2151252675,2248776129600, 215656441] |