A076872 - OEIS

A076872 as a simple table

n	a(n)
1	0
2	1
3	1
4	1
5	2
6	2
7	2
8	3
9	4
10	5
11	5
12	6
13	7
14	7
15	7
16	8
17	9
18	10
19	10
20	11
21	11
22	11
23	11
24	12
25	13
26	14
27	14
28	15
29	16
30	16
31	17
32	18
33	19
34	20
35	21
36	22
37	23
38	23
39	23
40	24
41	25
42	25
43	26
44	27
45	28
46	28
47	28
48	29
49	29
50	30
51	30
52	31
53	32
54	33
55	33
56	33
57	34
58	35
59	36
60	36
61	37
62	37
63	38
64	39
65	40
66	40
67	40
68	41
69	41
70	41
71	41
72	42
73	43
74	44
75	44

[0,1,1,1,2,2,2,3,4,5,5,6,7,7,7,8,9,10,10,11,11,11, 11,12,13,14,14,15,16,16,17,18,19,20,21,22,23,23, 23,24,25,25,26,27,28,28,28,29,29,30,30,31,32,33, 33,33,34,35,36,36,37,37,38,39,40,40,40,41,41,41, 41,42,43,44,44]

n	a(n)
1	0
2	1
3	1
4	1
5	2
6	2
7	2
8	3
9	4
10	5
11	5
12	6
13	7
14	7
15	7
16	8
17	9
18	10
19	10
20	11
21	11
22	11
23	11
24	12
25	13
26	14
27	14
28	15
29	16
30	16
31	17
32	18
33	19
34	20
35	21
36	22
37	23
38	23
39	23
40	24
41	25
42	25
43	26
44	27
45	28
46	28
47	28
48	29
49	29
50	30
51	30
52	31
53	32
54	33
55	33
56	33
57	34
58	35
59	36
60	36
61	37
62	37
63	38
64	39
65	40
66	40
67	40
68	41
69	41
70	41
71	41
72	42
73	43
74	44
75	44

n	a(n)
1	0
2	1
3	1
4	1
5	2
6	2
7	2
8	3
9	4
10	5
11	5
12	6
13	7
14	7
15	7
16	8
17	9
18	10
19	10
20	11
21	11
22	11
23	11
24	12
25	13
26	14
27	14
28	15
29	16
30	16
31	17
32	18
33	19
34	20
35	21
36	22
37	23
38	23
39	23
40	24
41	25
42	25
43	26
44	27
45	28
46	28
47	28
48	29
49	29
50	30
51	30
52	31
53	32
54	33
55	33
56	33
57	34
58	35
59	36
60	36
61	37
62	37
63	38
64	39
65	40
66	40
67	40
68	41
69	41
70	41
71	41
72	42
73	43
74	44
75	44

n	a(n)
1	0
2	1
3	1
4	1
5	2
6	2
7	2
8	3
9	4
10	5
11	5
12	6
13	7
14	7
15	7
16	8
17	9
18	10
19	10
20	11
21	11
22	11
23	11
24	12
25	13
26	14
27	14
28	15
29	16
30	16
31	17
32	18
33	19
34	20
35	21
36	22
37	23
38	23
39	23
40	24
41	25
42	25
43	26
44	27
45	28
46	28
47	28
48	29
49	29
50	30
51	30
52	31
53	32
54	33
55	33
56	33
57	34
58	35
59	36
60	36
61	37
62	37
63	38
64	39
65	40
66	40
67	40
68	41
69	41
70	41
71	41
72	42
73	43
74	44
75	44