n | a(n) |
---|---|
0 | 1 |
1 | -4 |
2 | 17 |
3 | -80 |
4 | 384 |
5 | -1842 |
6 | 8827 |
7 | -42292 |
8 | 202631 |
9 | -970862 |
10 | 4651680 |
11 | -22287540 |
12 | 106786021 |
13 | -511642564 |
14 | 2451426797 |
15 | -11745491420 |
16 | 56276030304 |
17 | -269634660102 |
18 | 1291897270207 |
19 | -6189851690932 |
20 | 29657361184451 |
21 | -142096954231322 |
22 | 680827409972160 |
23 | -3262040095629480 |
[1,-4,17,-80,384,-1842,8827,-42292,202631,-970862, 4651680,-22287540,106786021,-511642564,2451426797, -11745491420,56276030304,-269634660102, 1291897270207,-6189851690932,29657361184451, -142096954231322,680827409972160, -3262040095629480] |