n | a(n) |
---|---|
0 | 1 |
1 | -2 |
2 | 6 |
3 | 12 |
4 | -122 |
5 | -316 |
6 | 4124 |
7 | 11608 |
8 | -169018 |
9 | -495724 |
10 | 7676596 |
11 | 23075112 |
12 | -371737956 |
13 | -1135805144 |
14 | 18808209528 |
15 | 58139400112 |
16 | -982459035322 |
17 | -3063548374604 |
18 | 52579900855620 |
19 | 165071778169864 |
20 | -2868211199377740 |
21 | -9053503669975944 |
[1,-2,6,12,-122,-316,4124,11608,-169018,-495724, 7676596,23075112,-371737956,-1135805144, 18808209528,58139400112,-982459035322, -3063548374604,52579900855620,165071778169864, -2868211199377740,-9053503669975944] |