A064920 - OEIS

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A064920 as a simple table

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

[2,3,3,5,4,7,5,5,6,11,6,13,8,7,9,17,8,19,8,9,12, 23,10,9,14,11,10,29,10,31,17,13,18,11,14,37,20,15, 12,41,12,43,14,13,24,47,18,13,14,19,16,53,20,15, 14,21,30,59,16,61,32,15,33,17,16,67,20,25,16,71, 26,73,38,19,22]

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

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

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