A136623 - OEIS

A136623 as a simple table

n	a(n)
1	1
2	1
3	2
4	3
5	4
6	5
7	5
8	7
9	8
10	9
11	9
12	11
13	11
14	13
15	13
16	13
17	16
18	17
19	17
20	19
21	19
22	19
23	19
24	23
25	23
26	25
27	25
28	27
29	27
30	29
31	29
32	31
33	32
34	31
35	32
36	31
37	32
38	37
39	37
40	37
41	37
42	41
43	41
44	43
45	43
46	43
47	43
48	47
49	47
50	49
51	49
52	49
53	49
54	53
55	53
56	53
57	53
58	53
59	53
60	59
61	59
62	61
63	61
64	61
65	64
66	61
67	64
68	67
69	67
70	67
71	67
72	71
73	71
74	73

[1,1,2,3,4,5,5,7,8,9,9,11,11,13,13,13,16,17,17,19, 19,19,19,23,23,25,25,27,27,29,29,31,32,31,32,31, 32,37,37,37,37,41,41,43,43,43,43,47,47,49,49,49, 49,53,53,53,53,53,53,59,59,61,61,61,64,61,64,67, 67,67,67,71,71,73]

n	a(n)
1	1
2	1
3	2
4	3
5	4
6	5
7	5
8	7
9	8
10	9
11	9
12	11
13	11
14	13
15	13
16	13
17	16
18	17
19	17
20	19
21	19
22	19
23	19
24	23
25	23
26	25
27	25
28	27
29	27
30	29
31	29
32	31
33	32
34	31
35	32
36	31
37	32
38	37
39	37
40	37
41	37
42	41
43	41
44	43
45	43
46	43
47	43
48	47
49	47
50	49
51	49
52	49
53	49
54	53
55	53
56	53
57	53
58	53
59	53
60	59
61	59
62	61
63	61
64	61
65	64
66	61
67	64
68	67
69	67
70	67
71	67
72	71
73	71
74	73

n	a(n)
1	1
2	1
3	2
4	3
5	4
6	5
7	5
8	7
9	8
10	9
11	9
12	11
13	11
14	13
15	13
16	13
17	16
18	17
19	17
20	19
21	19
22	19
23	19
24	23
25	23
26	25
27	25
28	27
29	27
30	29
31	29
32	31
33	32
34	31
35	32
36	31
37	32
38	37
39	37
40	37
41	37
42	41
43	41
44	43
45	43
46	43
47	43
48	47
49	47
50	49
51	49
52	49
53	49
54	53
55	53
56	53
57	53
58	53
59	53
60	59
61	59
62	61
63	61
64	61
65	64
66	61
67	64
68	67
69	67
70	67
71	67
72	71
73	71
74	73

n	a(n)
1	1
2	1
3	2
4	3
5	4
6	5
7	5
8	7
9	8
10	9
11	9
12	11
13	11
14	13
15	13
16	13
17	16
18	17
19	17
20	19
21	19
22	19
23	19
24	23
25	23
26	25
27	25
28	27
29	27
30	29
31	29
32	31
33	32
34	31
35	32
36	31
37	32
38	37
39	37
40	37
41	37
42	41
43	41
44	43
45	43
46	43
47	43
48	47
49	47
50	49
51	49
52	49
53	49
54	53
55	53
56	53
57	53
58	53
59	53
60	59
61	59
62	61
63	61
64	61
65	64
66	61
67	64
68	67
69	67
70	67
71	67
72	71
73	71
74	73