A356387 - OEIS

A356387 as a simple table

n	a(n)
0	1
1	1
2	2
3	2
4	-5
5	5
6	5
7	10
8	10
9	39
10	-39
11	-39
12	-13
13	13
14	13
15	26
16	26
17	-65
18	65
19	65
20	130
21	130
22	-816
23	816
24	816
25	272
26	-272
27	-272
28	-544
29	-544
30	102
31	-102
32	-102
33	-34
34	34
35	34
36	68
37	68
38	-170
39	170
40	170
41	340
42	340
43	1326
44	-1326
45	-1326
46	-442
47	442
48	442
49	884
50	884
51	-2210
52	2210
53	2210

[1,1,2,2,-5,5,5,10,10,39,-39,-39,-13,13,13,26,26, -65,65,65,130,130,-816,816,816,272,-272,-272,-544, -544,102,-102,-102,-34,34,34,68,68,-170,170,170, 340,340,1326,-1326,-1326,-442,442,442,884,884, -2210,2210,2210]

[1,1,2,2,-5,5,5,10,10,39,-39,-39,-13,13,13,26,26,
 -65,65,65,130,130,-816,816,816,272,-272,-272,-544,
 -544,102,-102,-102,-34,34,34,68,68,-170,170,170,
 340,340,1326,-1326,-1326,-442,442,442,884,884,
 -2210,2210,2210]