n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | -2 |
3 | 8 |
4 | -20 |
5 | 68 |
6 | -188 |
7 | 596 |
8 | -1724 |
9 | 5300 |
10 | -15644 |
11 | 47444 |
12 | -141308 |
13 | 425972 |
14 | -1273820 |
15 | 3829652 |
16 | -11472572 |
17 | 34450484 |
18 | -103285916 |
19 | 309988820 |
20 | -929704316 |
21 | 2789637236 |
22 | -8367863132 |
23 | 25105686548 |
24 | -75312865340 |
25 | 225946984628 |
26 | -677824176668 |
27 | 2033506084436 |
[0,1,-2,8,-20,68,-188,596,-1724,5300,-15644,47444, -141308,425972,-1273820,3829652,-11472572, 34450484,-103285916,309988820,-929704316, 2789637236,-8367863132,25105686548,-75312865340, 225946984628,-677824176668,2033506084436] |