n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | 1 |
4 | -1 |
5 | -3 |
6 | -5 |
7 | -13 |
8 | 11 |
9 | 131 |
10 | 389 |
11 | 2311 |
12 | 9 |
13 | -81511 |
14 | -484247 |
15 | -5751815 |
16 | -17124617 |
17 | 710017141 |
18 | 9644648819 |
19 | 204006839259 |
20 | 2405317965859 |
21 | -84560118880501 |
22 | -2988387877551859 |
23 | -105333970856330737 |
24 | -3722531175803860975 |
25 | 130866937507290027313 |
[1,1,1,1,-1,-3,-5,-13,11,131,389,2311,9,-81511, -484247,-5751815,-17124617,710017141,9644648819, 204006839259,2405317965859,-84560118880501, -2988387877551859,-105333970856330737, -3722531175803860975,130866937507290027313] |