login

A012457 as a simple table

na(n)
02
1-16
2248
3-3456
4-406368
5123982080
6-31807263360
79173875200000
8-3114459024453120
91251070155460915200
10-591321674803999426560
11326012628782956574638080
12-207713640106463567695994880

[2,-16,248,-3456,-406368,123982080,-31807263360,
 9173875200000,-3114459024453120,
 1251070155460915200,-591321674803999426560,
 326012628782956574638080,
 -207713640106463567695994880]