n | a(n) |
---|---|
0 | 1 |
1 | -6 |
2 | 24 |
3 | -80 |
4 | 234 |
5 | -624 |
6 | 1552 |
7 | -3648 |
8 | 8184 |
9 | -17654 |
10 | 36816 |
11 | -74544 |
12 | 147056 |
13 | -283440 |
14 | 535008 |
15 | -990912 |
16 | 1803882 |
17 | -3232224 |
18 | 5707624 |
19 | -9943536 |
20 | 17106960 |
21 | -29088352 |
22 | 48922320 |
23 | -81438528 |
24 | 134261584 |
25 | -219336630 |
26 | 355242288 |
[1,-6,24,-80,234,-624,1552,-3648,8184,-17654, 36816,-74544,147056,-283440,535008,-990912, 1803882,-3232224,5707624,-9943536,17106960, -29088352,48922320,-81438528,134261584,-219336630, 355242288] |