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n | a(n) |
---|---|
1 | 1 |
2 | 1 |
3 | 4 |
4 | 28 |
5 | 264 |
6 | 2992 |
7 | 38496 |
8 | 544464 |
9 | 8298080 |
10 | 134500672 |
11 | 2297361024 |
12 | 41077857152 |
13 | 765073498368 |
14 | 14786330691072 |
15 | 295652808207360 |
16 | 6101427222041856 |
17 | 129707991377671680 |
18 | 2835915576534111232 |
19 | 63683889838128080896 |
20 | 1467174199736163264512 |
21 | 34643692576697214742528 |
22 | 837694231078769706999808 |
23 | 20727017363846896783998976 |
[1,1,4,28,264,2992,38496,544464,8298080,134500672, 2297361024,41077857152,765073498368, 14786330691072,295652808207360,6101427222041856, 129707991377671680,2835915576534111232, 63683889838128080896,1467174199736163264512, 34643692576697214742528,837694231078769706999808, 20727017363846896783998976] |