n | a(n) |
---|---|
0 | 0 |
1 | 0 |
2 | 2 |
3 | -3 |
4 | 4 |
5 | -20 |
6 | -130 |
7 | 1869 |
8 | -12280 |
9 | 100080 |
10 | -362822 |
11 | -7482475 |
12 | 168953420 |
13 | -2715677172 |
14 | 34715587062 |
15 | -205932278475 |
16 | -3285394779888 |
17 | 157209810212416 |
18 | -4031590864355982 |
19 | 71565905502128781 |
[0,0,2,-3,4,-20,-130,1869,-12280,100080,-362822, -7482475,168953420,-2715677172,34715587062, -205932278475,-3285394779888,157209810212416, -4031590864355982,71565905502128781] |