n | a(n) |
---|---|
3 | -2 |
4 | 3 |
5 | 0 |
6 | 25 |
7 | 152 |
8 | 1350 |
9 | 12644 |
10 | 131391 |
11 | 1489568 |
12 | 18329481 |
13 | 243365514 |
14 | 3468969962 |
15 | 52848096274 |
16 | 857073295427 |
17 | 14744289690560 |
18 | 268202790690465 |
19 | 5143861702523924 |
20 | 103746422699053582 |
21 | 2195275169113687656 |
22 | 48629604864202585247 |
[-2,3,0,25,152,1350,12644,131391,1489568,18329481, 243365514,3468969962,52848096274,857073295427, 14744289690560,268202790690465,5143861702523924, 103746422699053582,2195275169113687656, 48629604864202585247] |