A156562 - OEIS

A156562 as a simple table

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

[1,2,3,3,4,5,5,7,7,8,9,10,10,11,12,12,13,14,15,15, 17,16,18,18,19,20,21,21,22,23,23,24,25,25,27,27, 28,29,30,30,31,32,32,34,34,35,36,36,37,38,38,39, 40,41,41,43,43,44,44,46,45,48,47,49,49,51,50,52]

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

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

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