A212822 - OEIS

A212822 as a simple table

n	a(n)
2	1
3	2
4	-1
5	1
6	3
7	-1
8	2
9	6
10	-8
11	3
12	2
13	10
14	10
15	-10
16	3
17	4
18	20
19	10
20	-50
21	46
22	-15
23	17
24	119
25	245
26	35
27	-217
28	161
29	-45
30	34
31	238
32	406
33	-350
34	-644
35	1372
36	-1056
37	315
38	62
39	558
40	1722
41	1638
42	-1092
43	-1008
44	1828
45	-1188
46	315
47	124
48	1116
49	3138
50	1134
51	-5838
52	1134
53	9452
54	-14724
55	10134
56	-2835

[1,2,-1,1,3,-1,2,6,-8,3,2,10,10,-10,3,4,20,10,-50, 46,-15,17,119,245,35,-217,161,-45,34,238,406,-350, -644,1372,-1056,315,62,558,1722,1638,-1092,-1008, 1828,-1188,315,124,1116,3138,1134,-5838,1134,9452, -14724,10134,-2835]