A120751 - OEIS

A120751 as a simple table

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

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

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

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

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