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A012424 as a simple table

na(n)
01
10
2-12
3360
4-14000
5826560
6-74707776
79918004096
8-1826276458240
9443565659817984
10-136830226103770112
1152123659256392435712
12-23992831220659002945536
1313113491065080505366691840

[1,0,-12,360,-14000,826560,-74707776,9918004096,
 -1826276458240,443565659817984,
 -136830226103770112,52123659256392435712,
 -23992831220659002945536,
 13113491065080505366691840]