A355567 - OEIS

A355567 as a simple table

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	3
6	1
7	3
8	3
9	15
10	3
11	1
12	15
13	5
14	105
15	3
16	15
17	15
18	35
19	21
20	315
21	15
22	1
23	35
24	105
25	45
26	45
27	3465
28	15
29	105
30	21
31	315
32	7
33	693
34	231
35	45045
36	105
37	5
38	315
39	315
40	495
41	495
42	15015
43	585
44	45045
45	7
46	315
47	45
48	3465
49	3465
50	45045
51	45045
52	15015
53	385
54	765765
55	315
56	35
57	3465
58	495
59	45045
60	6435
61	15015
62	45045
63	765765
64	9945
65	14549535

[1,1,1,1,1,3,1,3,3,15,3,1,15,5,105,3,15,15,35,21, 315,15,1,35,105,45,45,3465,15,105,21,315,7,693, 231,45045,105,5,315,315,495,495,15015,585,45045,7, 315,45,3465,3465,45045,45045,15015,385,765765,315, 35,3465,495,45045,6435,15015,45045,765765,9945, 14549535]