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A012395 as a simple table

na(n)
01
10
2-12
3-480
4-15792
5387840
6232592448
744951262720
84538494871808
9-1173690989322240
10-1020600368000166912
11-406075179314308669440
12-50036577406600515366912
1387776293107173235762462720

[1,0,-12,-480,-15792,387840,232592448,44951262720,
 4538494871808,-1173690989322240,
 -1020600368000166912,-406075179314308669440,
 -50036577406600515366912,
 87776293107173235762462720]