A163840 - OEIS

A163840 as a simple table

n	a(n)
0	1
1	2
2	1
3	5
4	3
5	2
6	16
7	11
8	8
9	6
10	47
11	31
12	20
13	12
14	6
15	146
16	99
17	68
18	48
19	36
20	30
21	447
22	301
23	202
24	134
25	86
26	50
27	20
28	1380
29	933
30	632
31	430
32	296
33	210
34	160
35	140
36	4251
37	2871
38	1938
39	1306
40	876
41	580
42	370
43	210
44	70
45	13102
46	8851
47	5980
48	4042
49	2736
50	1860
51	1280
52	910
53	700
54	630

[1,2,1,5,3,2,16,11,8,6,47,31,20,12,6,146,99,68,48, 36,30,447,301,202,134,86,50,20,1380,933,632,430, 296,210,160,140,4251,2871,1938,1306,876,580,370, 210,70,13102,8851,5980,4042,2736,1860,1280,910, 700,630]