n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | -2 |
3 | 14 |
4 | -70 |
5 | 426 |
6 | -2714 |
7 | 18118 |
8 | -124814 |
9 | 881042 |
10 | -6339058 |
11 | 46318334 |
12 | -342769750 |
13 | 2563781690 |
14 | -19350683018 |
15 | 147197511222 |
16 | -1127334112542 |
17 | 8685458120226 |
18 | -67270210217186 |
19 | 523472089991662 |
20 | -4090668558473318 |
21 | 32088204418069450 |
22 | -252576222775705466 |
[1,2,-2,14,-70,426,-2714,18118,-124814,881042, -6339058,46318334,-342769750,2563781690, -19350683018,147197511222,-1127334112542, 8685458120226,-67270210217186,523472089991662, -4090668558473318,32088204418069450, -252576222775705466] |