A189672 - OEIS

A189672 as a simple table

n	a(n)
1	0
2	1
3	1
4	1
5	2
6	3
7	3
8	4
9	4
10	4
11	5
12	5
13	5
14	6
15	7
16	7
17	8
18	9
19	9
20	10
21	10
22	10
23	11
24	12
25	12
26	13
27	13
28	13
29	14
30	14
31	14
32	15
33	16
34	16
35	17
36	17
37	17
38	18
39	18
40	18
41	19
42	20
43	20
44	21
45	22
46	22
47	23
48	23
49	23
50	24
51	25
52	25
53	26
54	27
55	27
56	28
57	28
58	28
59	29
60	30
61	30
62	31
63	31
64	31
65	32
66	32
67	32
68	33
69	34
70	34
71	35
72	36
73	36
74	37
75	37
76	37
77	38
78	39
79	39
80	40

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

n	a(n)
1	0
2	1
3	1
4	1
5	2
6	3
7	3
8	4
9	4
10	4
11	5
12	5
13	5
14	6
15	7
16	7
17	8
18	9
19	9
20	10
21	10
22	10
23	11
24	12
25	12
26	13
27	13
28	13
29	14
30	14
31	14
32	15
33	16
34	16
35	17
36	17
37	17
38	18
39	18
40	18
41	19
42	20
43	20
44	21
45	22
46	22
47	23
48	23
49	23
50	24
51	25
52	25
53	26
54	27
55	27
56	28
57	28
58	28
59	29
60	30
61	30
62	31
63	31
64	31
65	32
66	32
67	32
68	33
69	34
70	34
71	35
72	36
73	36
74	37
75	37
76	37
77	38
78	39
79	39
80	40

n	a(n)
1	0
2	1
3	1
4	1
5	2
6	3
7	3
8	4
9	4
10	4
11	5
12	5
13	5
14	6
15	7
16	7
17	8
18	9
19	9
20	10
21	10
22	10
23	11
24	12
25	12
26	13
27	13
28	13
29	14
30	14
31	14
32	15
33	16
34	16
35	17
36	17
37	17
38	18
39	18
40	18
41	19
42	20
43	20
44	21
45	22
46	22
47	23
48	23
49	23
50	24
51	25
52	25
53	26
54	27
55	27
56	28
57	28
58	28
59	29
60	30
61	30
62	31
63	31
64	31
65	32
66	32
67	32
68	33
69	34
70	34
71	35
72	36
73	36
74	37
75	37
76	37
77	38
78	39
79	39
80	40

n	a(n)
1	0
2	1
3	1
4	1
5	2
6	3
7	3
8	4
9	4
10	4
11	5
12	5
13	5
14	6
15	7
16	7
17	8
18	9
19	9
20	10
21	10
22	10
23	11
24	12
25	12
26	13
27	13
28	13
29	14
30	14
31	14
32	15
33	16
34	16
35	17
36	17
37	17
38	18
39	18
40	18
41	19
42	20
43	20
44	21
45	22
46	22
47	23
48	23
49	23
50	24
51	25
52	25
53	26
54	27
55	27
56	28
57	28
58	28
59	29
60	30
61	30
62	31
63	31
64	31
65	32
66	32
67	32
68	33
69	34
70	34
71	35
72	36
73	36
74	37
75	37
76	37
77	38
78	39
79	39
80	40