A356517 - OEIS

A356517 as a simple table

n	a(n)
2	0
3	0
4	1
5	0
6	1
7	3
8	0
9	1
10	2
11	7
12	0
13	1
14	2
15	5
16	15
17	0
18	1
19	2
20	3
21	8
22	31
23	0
24	1
25	2
26	3
27	7
28	17
29	63
30	0
31	1
32	2
33	3
34	4
35	11
36	26
37	127
38	0
39	1
40	2
41	3
42	4
43	9
44	15
45	53
46	255
47	0
48	1
49	2
50	3
51	4
52	5
53	14
54	31
55	80
56	511
57	0
58	1
59	2
60	3
61	4
62	5
63	11
64	19
65	47
66	161
67	1023
68	0
69	1
70	2
71	3
72	4
73	5
74	6
75	17
76	24
77	63
78	242
79	2047

[0,0,1,0,1,3,0,1,2,7,0,1,2,5,15,0,1,2,3,8,31,0,1, 2,3,7,17,63,0,1,2,3,4,11,26,127,0,1,2,3,4,9,15,53, 255,0,1,2,3,4,5,14,31,80,511,0,1,2,3,4,5,11,19,47, 161,1023,0,1,2,3,4,5,6,17,24,63,242,2047]