A020660 - OEIS

A020660 as a simple table

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	10
10	11
11	12
12	13
13	14
14	16
15	17
16	18
17	19
18	20
19	21
20	23
21	24
22	25
23	26
24	27
25	28
26	30
27	31
28	32
29	33
30	34
31	35
32	37
33	38
34	39
35	40
36	41
37	42
38	44
39	45
40	46
41	47
42	48
43	49
44	50
45	59
46	60
47	61
48	62
49	63
50	64
51	65
52	67
53	69
54	70
55	71
56	72
57	74
58	75
59	76
60	77
61	78
62	79
63	81
64	84
65	85
66	87
67	88
68	89
69	91
70	92
71	93
72	95
73	96
74	97

[1,2,3,4,5,6,7,9,10,11,12,13,14,16,17,18,19,20,21, 23,24,25,26,27,28,30,31,32,33,34,35,37,38,39,40, 41,42,44,45,46,47,48,49,50,59,60,61,62,63,64,65, 67,69,70,71,72,74,75,76,77,78,79,81,84,85,87,88, 89,91,92,93,95,96,97]

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	10
10	11
11	12
12	13
13	14
14	16
15	17
16	18
17	19
18	20
19	21
20	23
21	24
22	25
23	26
24	27
25	28
26	30
27	31
28	32
29	33
30	34
31	35
32	37
33	38
34	39
35	40
36	41
37	42
38	44
39	45
40	46
41	47
42	48
43	49
44	50
45	59
46	60
47	61
48	62
49	63
50	64
51	65
52	67
53	69
54	70
55	71
56	72
57	74
58	75
59	76
60	77
61	78
62	79
63	81
64	84
65	85
66	87
67	88
68	89
69	91
70	92
71	93
72	95
73	96
74	97

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	10
10	11
11	12
12	13
13	14
14	16
15	17
16	18
17	19
18	20
19	21
20	23
21	24
22	25
23	26
24	27
25	28
26	30
27	31
28	32
29	33
30	34
31	35
32	37
33	38
34	39
35	40
36	41
37	42
38	44
39	45
40	46
41	47
42	48
43	49
44	50
45	59
46	60
47	61
48	62
49	63
50	64
51	65
52	67
53	69
54	70
55	71
56	72
57	74
58	75
59	76
60	77
61	78
62	79
63	81
64	84
65	85
66	87
67	88
68	89
69	91
70	92
71	93
72	95
73	96
74	97

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	7
8	9
9	10
10	11
11	12
12	13
13	14
14	16
15	17
16	18
17	19
18	20
19	21
20	23
21	24
22	25
23	26
24	27
25	28
26	30
27	31
28	32
29	33
30	34
31	35
32	37
33	38
34	39
35	40
36	41
37	42
38	44
39	45
40	46
41	47
42	48
43	49
44	50
45	59
46	60
47	61
48	62
49	63
50	64
51	65
52	67
53	69
54	70
55	71
56	72
57	74
58	75
59	76
60	77
61	78
62	79
63	81
64	84
65	85
66	87
67	88
68	89
69	91
70	92
71	93
72	95
73	96
74	97