A075798 - OEIS

A075798 as a simple table

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	6
9	6
10	1
11	1
12	12
13	16
14	12
15	1
16	1
17	20
18	35
19	35
20	20
21	1
22	1
23	30
24	66
25	84
26	66
27	30
28	1
29	1
30	42
31	112
32	175
33	175
34	112
35	42
36	1
37	1
38	56
39	176
40	328
41	400
42	328
43	176
44	56
45	1
46	1
47	72
48	261
49	567
50	819
51	819
52	567
53	261
54	72
55	1
56	1
57	90
58	370
59	920
60	1540
61	1820
62	1540
63	920
64	370
65	90
66	1
67	1
68	110
69	506
70	1419
71	2706
72	3696
73	3696
74	2706
75	1419
76	506
77	110
78	1
79	1
80	132
81	672

[1,1,1,1,2,1,1,6,6,1,1,12,16,12,1,1,20,35,35,20,1, 1,30,66,84,66,30,1,1,42,112,175,175,112,42,1,1,56, 176,328,400,328,176,56,1,1,72,261,567,819,819,567, 261,72,1,1,90,370,920,1540,1820,1540,920,370,90,1, 1,110,506,1419,2706,3696,3696,2706,1419,506,110,1, 1,132,672]

[1,1,1,1,2,1,1,6,6,1,1,12,16,12,1,1,20,35,35,20,1,
 1,30,66,84,66,30,1,1,42,112,175,175,112,42,1,1,56,
 176,328,400,328,176,56,1,1,72,261,567,819,819,567,
 261,72,1,1,90,370,920,1540,1820,1540,920,370,90,1,
 1,110,506,1419,2706,3696,3696,2706,1419,506,110,1,
 1,132,672]