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A328141 as a simple table

na(n)
01
12
22
30
4-4
5-4
612
732
8-40
9-264
1056
112432
121872
13-24880
14-47344
15276096
16938912
17-3202528
18-18225120
1936217856
20364270016
21-323869248
22-7609269568
23-808015360
24166595915136
25185180268416
26-3813121694848
27-8442628405248
2890698535660800
29318649502602496
30-2220909495899904

[1,2,2,0,-4,-4,12,32,-40,-264,56,2432,1872,-24880,
 -47344,276096,938912,-3202528,-18225120,36217856,
 364270016,-323869248,-7609269568,-808015360,
 166595915136,185180268416,-3813121694848,
 -8442628405248,90698535660800,318649502602496,
 -2220909495899904]