n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -7 |
3 | 25 |
4 | -79 |
5 | 241 |
6 | -727 |
7 | 2185 |
8 | -6559 |
9 | 19681 |
10 | -59047 |
11 | 177145 |
12 | -531439 |
13 | 1594321 |
14 | -4782967 |
15 | 14348905 |
16 | -43046719 |
17 | 129140161 |
18 | -387420487 |
19 | 1162261465 |
20 | -3486784399 |
21 | 10460353201 |
22 | -31381059607 |
23 | 94143178825 |
24 | -282429536479 |
[1,1,-7,25,-79,241,-727,2185,-6559,19681,-59047, 177145,-531439,1594321,-4782967,14348905, -43046719,129140161,-387420487,1162261465, -3486784399,10460353201,-31381059607,94143178825, -282429536479] |