A064542 - OEIS

A064542 as a simple table

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

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

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

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

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