n | a(n) |
---|---|
1 | 4 |
2 | 16 |
3 | 64 |
4 | 416 |
5 | 4544 |
6 | 23488 |
7 | -207616 |
8 | 4205056 |
9 | 198295552 |
10 | -2574439424 |
11 | -112886362112 |
12 | 3567419838464 |
13 | 94446596145152 |
14 | -5636771173998592 |
[4,16,64,416,4544,23488,-207616,4205056,198295552, -2574439424,-112886362112,3567419838464, 94446596145152,-5636771173998592] |