A204161 - OEIS

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A204161 as a simple table

n	a(n)
1	1
2	-1
3	3
4	-5
5	1
6	18
7	-36
8	12
9	-1
10	162
11	-360
12	153
13	-22
14	1
15	1944
16	-4644
17	2295
18	-435
19	35
20	-1
21	29160
22	-73548
23	40419
24	-9135
25	990
26	-51
27	1
28	524880
29	-1382184
30	823284
31	-210924
32	27720
33	-1953
34	70
35	-1
36	11022480

[1,-1,3,-5,1,18,-36,12,-1,162,-360,153,-22,1,1944, -4644,2295,-435,35,-1,29160,-73548,40419,-9135, 990,-51,1,524880,-1382184,823284,-210924,27720, -1953,70,-1,11022480]