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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 12 |
| 4 | 6 |
| 5 | 1 |
| 6 | 240 |
| 7 | 72 |
| 8 | 12 |
| 9 | 1 |
| 10 | 12400 |
| 11 | 2240 |
| 12 | 240 |
| 13 | 20 |
| 14 | 1 |
| 15 | 1242720 |
| 16 | 157200 |
| 17 | 10800 |
| 18 | 600 |
| 19 | 30 |
| 20 | 1 |
| 21 | 202721064 |
| 22 | 20017032 |
| 23 | 1000440 |
| 24 | 36960 |
| 25 | 1260 |
| 26 | 42 |
| 27 | 1 |
| 28 | 48537596352 |
| 29 | 3986643136 |
| 30 | 159475008 |
| 31 | 4390400 |
| 32 | 101920 |
| 33 | 2352 |
| 34 | 56 |
| 35 | 1 |
| 36 | 15957585674496 |
| 37 | 1133413590528 |
[1,2,1,12,6,1,240,72,12,1,12400,2240,240,20,1, 1242720,157200,10800,600,30,1,202721064,20017032, 1000440,36960,1260,42,1,48537596352,3986643136, 159475008,4390400,101920,2352,56,1,15957585674496, 1133413590528] |