n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | -1 |
3 | 2 |
4 | -4 |
5 | 9 |
6 | -21 |
7 | 53 |
8 | -137 |
9 | 362 |
10 | -971 |
11 | 2642 |
12 | -7272 |
13 | 20211 |
14 | -56631 |
15 | 159795 |
16 | -453650 |
17 | 1294797 |
18 | -3713100 |
19 | 10693036 |
20 | -30910440 |
21 | 89657680 |
22 | -260860962 |
23 | 761114168 |
24 | -2226409022 |
25 | 6528039545 |
26 | -19182376302 |
27 | 56479676608 |
28 | -166605140314 |
29 | 492304708589 |
30 | -1457061274821 |
31 | 4318906269671 |
[1,1,-1,2,-4,9,-21,53,-137,362,-971,2642,-7272, 20211,-56631,159795,-453650,1294797,-3713100, 10693036,-30910440,89657680,-260860962,761114168, -2226409022,6528039545,-19182376302,56479676608, -166605140314,492304708589,-1457061274821, 4318906269671] |