n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | -1 |
3 | -2 |
4 | 6 |
5 | -15 |
6 | 75 |
7 | -492 |
8 | 3668 |
9 | -30955 |
10 | 291555 |
11 | -3025926 |
12 | 34283106 |
13 | -420908163 |
14 | 5566032199 |
15 | -78872781080 |
16 | 1192366871400 |
17 | -19156320275703 |
18 | 325945717605927 |
19 | -5855722497051210 |
20 | 110770076684790590 |
21 | -2200845760320344599 |
[0,1,-1,-2,6,-15,75,-492,3668,-30955,291555, -3025926,34283106,-420908163,5566032199, -78872781080,1192366871400,-19156320275703, 325945717605927,-5855722497051210, 110770076684790590,-2200845760320344599] |