n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | -3 |
4 | 16 |
5 | -50 |
6 | 488 |
7 | -3024 |
8 | 35376 |
9 | -313704 |
10 | 4119552 |
11 | -46248840 |
12 | 682997280 |
13 | -9209575440 |
14 | 152505104880 |
15 | -2394128401560 |
16 | 44145984906240 |
17 | -789552273397440 |
18 | 16082343831221760 |
19 | -322420285049880960 |
[0,0,2,-3,16,-50,488,-3024,35376,-313704,4119552, -46248840,682997280,-9209575440,152505104880, -2394128401560,44145984906240,-789552273397440, 16082343831221760,-322420285049880960] |