n | a(n) |
---|---|
1 | 2 |
2 | 9 |
3 | 30 |
4 | 60 |
5 | 122 |
6 | -878 |
7 | 11429 |
8 | 35241 |
9 | -177141 |
10 | 709582 |
11 | -3123032 |
12 | -1157723745 |
13 | 3237738813 |
14 | -16178936725 |
15 | 33395053634 |
16 | -71863018424 |
17 | -153349368674 |
18 | -386763022623 |
19 | -8021033029400 |
20 | 16314606875900 |
21 | 52522689388692 |
[2,9,30,60,122,-878,11429,35241,-177141,709582, -3123032,-1157723745,3237738813,-16178936725, 33395053634,-71863018424,-153349368674, -386763022623,-8021033029400,16314606875900, 52522689388692] |