n | a(n) |
---|---|
0 | 0 |
1 | -3 |
2 | 6 |
3 | -9 |
4 | 21 |
5 | -33 |
6 | 72 |
7 | -120 |
8 | 249 |
9 | -432 |
10 | 867 |
11 | -1545 |
12 | 3033 |
13 | -5502 |
14 | 10644 |
15 | -19539 |
16 | 37434 |
17 | -69261 |
18 | 131841 |
19 | -245217 |
20 | 464784 |
21 | -867492 |
22 | 1639569 |
23 | -3067260 |
24 | 5786199 |
25 | -10841349 |
26 | 20425857 |
27 | -38310246 |
28 | 72118920 |
29 | -135356595 |
30 | 254667006 |
31 | -478188705 |
32 | 899357613 |
[0,-3,6,-9,21,-33,72,-120,249,-432,867,-1545,3033, -5502,10644,-19539,37434,-69261,131841,-245217, 464784,-867492,1639569,-3067260,5786199,-10841349, 20425857,-38310246,72118920,-135356595,254667006, -478188705,899357613] |