A259570 - OEIS

A259570 as a simple table

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

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

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

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

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