A175830 - OEIS

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A175830 as a simple table

n	a(n)
0	0
1	1
2	2
3	1
4	2
5	1
6	2
7	1
8	2
9	1
10	2
11	1
12	2
13	3
14	2
15	1
16	2
17	1
18	2
19	1
20	2
21	3
22	2
23	1
24	2
25	1
26	2
27	3
28	2
29	3
30	2
31	1
32	2
33	3
34	2
35	1
36	2
37	1
38	2
39	1
40	2
41	1
42	2

[0,1,2,1,2,1,2,1,2,1,2,1,2,3,2,1,2,1,2,1,2,3,2,1, 2,1,2,3,2,3,2,1,2,3,2,1,2,1,2,1,2,1,2]