login

A012467 as a simple table

na(n)
01
10
2-12
3480
4-21168
5741120
661942848
7-29951061504
88015861467392
9-1745546459848704
10215844160641143808
1191751419512905687040
12-109687232118939992862720
1371900040403600384794624000

[1,0,-12,480,-21168,741120,61942848,-29951061504,
 8015861467392,-1745546459848704,
 215844160641143808,91751419512905687040,
 -109687232118939992862720,
 71900040403600384794624000]