A049473 - OEIS

A049473 as a simple table

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

[0,1,1,2,3,4,4,5,6,6,7,8,8,9,10,11,11,12,13,13,14, 15,16,16,17,18,18,19,20,21,21,22,23,23,24,25,25, 26,27,28,28,29,30,30,31,32,33,33,34,35,35,36,37, 37,38,39,40,40,41,42,42,43,44,45,45,46,47,47]

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

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

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