A045767 - OEIS

A045767 as a simple table

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	3
8	5
9	5
10	5
11	6
12	8
13	6
14	8
15	10
16	10
17	9
18	13
19	11
20	12
21	15
22	13
23	13
24	19
25	15
26	15
27	22
28	18
29	16
30	25
31	19
32	21
33	27
34	21
35	23
36	31
37	22
38	25
39	33
40	26
41	26
42	36
43	27
44	29
45	39
46	29
47	30
48	44
49	31
50	33
51	46
52	34
53	34
54	50
55	36
56	38
57	52
58	38
59	39
60	56
61	39
62	41
63	59
64	45
65	43
66	62
67	46
68	46
69	64
70	49
71	47
72	69
73	50
74	49

[0,1,1,2,2,3,3,5,5,5,6,8,6,8,10,10,9,13,11,12,15, 13,13,19,15,15,22,18,16,25,19,21,27,21,23,31,22, 25,33,26,26,36,27,29,39,29,30,44,31,33,46,34,34, 50,36,38,52,38,39,56,39,41,59,45,43,62,46,46,64, 49,47,69,50,49]

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	3
8	5
9	5
10	5
11	6
12	8
13	6
14	8
15	10
16	10
17	9
18	13
19	11
20	12
21	15
22	13
23	13
24	19
25	15
26	15
27	22
28	18
29	16
30	25
31	19
32	21
33	27
34	21
35	23
36	31
37	22
38	25
39	33
40	26
41	26
42	36
43	27
44	29
45	39
46	29
47	30
48	44
49	31
50	33
51	46
52	34
53	34
54	50
55	36
56	38
57	52
58	38
59	39
60	56
61	39
62	41
63	59
64	45
65	43
66	62
67	46
68	46
69	64
70	49
71	47
72	69
73	50
74	49

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	3
8	5
9	5
10	5
11	6
12	8
13	6
14	8
15	10
16	10
17	9
18	13
19	11
20	12
21	15
22	13
23	13
24	19
25	15
26	15
27	22
28	18
29	16
30	25
31	19
32	21
33	27
34	21
35	23
36	31
37	22
38	25
39	33
40	26
41	26
42	36
43	27
44	29
45	39
46	29
47	30
48	44
49	31
50	33
51	46
52	34
53	34
54	50
55	36
56	38
57	52
58	38
59	39
60	56
61	39
62	41
63	59
64	45
65	43
66	62
67	46
68	46
69	64
70	49
71	47
72	69
73	50
74	49

n	a(n)
1	0
2	1
3	1
4	2
5	2
6	3
7	3
8	5
9	5
10	5
11	6
12	8
13	6
14	8
15	10
16	10
17	9
18	13
19	11
20	12
21	15
22	13
23	13
24	19
25	15
26	15
27	22
28	18
29	16
30	25
31	19
32	21
33	27
34	21
35	23
36	31
37	22
38	25
39	33
40	26
41	26
42	36
43	27
44	29
45	39
46	29
47	30
48	44
49	31
50	33
51	46
52	34
53	34
54	50
55	36
56	38
57	52
58	38
59	39
60	56
61	39
62	41
63	59
64	45
65	43
66	62
67	46
68	46
69	64
70	49
71	47
72	69
73	50
74	49