n | a(n) |
---|---|
0 | 1 |
1 | 0 |
2 | -4 |
3 | 6 |
4 | -19 |
5 | 20 |
6 | 26 |
7 | -1218 |
8 | 13021 |
9 | -123624 |
10 | 1277216 |
11 | -12476530 |
12 | 142470545 |
13 | -1576920228 |
14 | 20310039174 |
15 | -259802497290 |
16 | 3783797829145 |
17 | -55910099232336 |
18 | 917432601399236 |
19 | -15504261990312618 |
20 | 284553809208217365 |
[1,0,-4,6,-19,20,26,-1218,13021,-123624,1277216, -12476530,142470545,-1576920228,20310039174, -259802497290,3783797829145,-55910099232336, 917432601399236,-15504261990312618, 284553809208217365] |