n | a(n) |
---|---|
0 | 1 |
1 | 3 |
2 | 3 |
3 | 15 |
4 | 3 |
5 | 87 |
6 | -69 |
7 | 591 |
8 | -1005 |
9 | 4551 |
10 | -10581 |
11 | 37887 |
12 | -101373 |
13 | 328695 |
14 | -936933 |
15 | 2909103 |
16 | -8530701 |
17 | 25985319 |
18 | -77169525 |
19 | 233081439 |
20 | -696098589 |
21 | 2094587223 |
22 | -6271178757 |
23 | 18838702095 |
24 | -56465774637 |
25 | 169497987207 |
26 | -508292635029 |
[1,3,3,15,3,87,-69,591,-1005,4551,-10581,37887, -101373,328695,-936933,2909103,-8530701,25985319, -77169525,233081439,-696098589,2094587223, -6271178757,18838702095,-56465774637,169497987207, -508292635029] |