A241686 - OEIS

A241686 as a simple table

n	a(n)
1	1
2	2
3	3
4	3
5	3
6	5
7	3
8	5
9	7
10	7
11	5
12	11
13	7
14	11
15	13
16	13
17	11
18	17
19	7
20	17
21	19
22	13
23	17
24	19
25	19
26	23
27	23
28	19
29	17
30	29
31	19
32	23
33	29
34	31
35	29
36	31
37	31
38	29
39	37
40	37
41	29
42	41
43	19
44	41
45	43
46	31
47	41
48	43
49	37
50	47
51	43
52	43
53	47
54	47
55	43
56	53
57	53
58	43
59	47
60	59
61	43
62	53
63	59
64	61
65	59
66	61
67	61
68	53

[1,2,3,3,3,5,3,5,7,7,5,11,7,11,13,13,11,17,7,17, 19,13,17,19,19,23,23,19,17,29,19,23,29,31,29,31, 31,29,37,37,29,41,19,41,43,31,41,43,37,47,43,43, 47,47,43,53,53,43,47,59,43,53,59,61,59,61,61,53]

n	a(n)
1	1
2	2
3	3
4	3
5	3
6	5
7	3
8	5
9	7
10	7
11	5
12	11
13	7
14	11
15	13
16	13
17	11
18	17
19	7
20	17
21	19
22	13
23	17
24	19
25	19
26	23
27	23
28	19
29	17
30	29
31	19
32	23
33	29
34	31
35	29
36	31
37	31
38	29
39	37
40	37
41	29
42	41
43	19
44	41
45	43
46	31
47	41
48	43
49	37
50	47
51	43
52	43
53	47
54	47
55	43
56	53
57	53
58	43
59	47
60	59
61	43
62	53
63	59
64	61
65	59
66	61
67	61
68	53

n	a(n)
1	1
2	2
3	3
4	3
5	3
6	5
7	3
8	5
9	7
10	7
11	5
12	11
13	7
14	11
15	13
16	13
17	11
18	17
19	7
20	17
21	19
22	13
23	17
24	19
25	19
26	23
27	23
28	19
29	17
30	29
31	19
32	23
33	29
34	31
35	29
36	31
37	31
38	29
39	37
40	37
41	29
42	41
43	19
44	41
45	43
46	31
47	41
48	43
49	37
50	47
51	43
52	43
53	47
54	47
55	43
56	53
57	53
58	43
59	47
60	59
61	43
62	53
63	59
64	61
65	59
66	61
67	61
68	53

n	a(n)
1	1
2	2
3	3
4	3
5	3
6	5
7	3
8	5
9	7
10	7
11	5
12	11
13	7
14	11
15	13
16	13
17	11
18	17
19	7
20	17
21	19
22	13
23	17
24	19
25	19
26	23
27	23
28	19
29	17
30	29
31	19
32	23
33	29
34	31
35	29
36	31
37	31
38	29
39	37
40	37
41	29
42	41
43	19
44	41
45	43
46	31
47	41
48	43
49	37
50	47
51	43
52	43
53	47
54	47
55	43
56	53
57	53
58	43
59	47
60	59
61	43
62	53
63	59
64	61
65	59
66	61
67	61
68	53