login

A012758 as a simple table

na(n)
00
11
2-1
36
4-18
5123
6-855
78610
8-92540
91220765
10-17627085
11291506270
12-5265113502
13105134332743
14-2272750891411
1553258927842666
16-1338863892701400
1736033888424535961
18-1032074699069841561

[0,1,-1,6,-18,123,-855,8610,-92540,1220765,
 -17627085,291506270,-5265113502,105134332743,
 -2272750891411,53258927842666,-1338863892701400,
 36033888424535961,-1032074699069841561]