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A347425 as a simple table

na(n)
01
11
2-4
3120
4-1344
53024000
6-1576143360
7101708006400
8-2522591034163200
96686974460694528000
10-1287307431968882688000
11160078872315904478576640000
12-53718579665963356985229312000
13574898901006059006921736192000000
14-241364461951740682229320388129587200000

[1,1,-4,120,-1344,3024000,-1576143360,
 101708006400,-2522591034163200,
 6686974460694528000,-1287307431968882688000,
 160078872315904478576640000,
 -53718579665963356985229312000,
 574898901006059006921736192000000,
 -241364461951740682229320388129587200000]