n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 1 |
3 | -3 |
4 | -15 |
5 | 49 |
6 | 609 |
7 | -1859 |
8 | -48031 |
9 | 119617 |
10 | 6247681 |
11 | -10283171 |
12 | -1214813487 |
13 | 678311217 |
14 | 330587407201 |
15 | 246695568861 |
16 | -120086685689663 |
17 | -270153706006015 |
18 | 56186566871496961 |
19 | 221300400903581245 |
[1,1,1,-3,-15,49,609,-1859,-48031,119617,6247681, -10283171,-1214813487,678311217,330587407201, 246695568861,-120086685689663,-270153706006015, 56186566871496961,221300400903581245] |