A047519 - OEIS

A047519 as a simple table

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	9
8	10
9	11
10	12
11	14
12	15
13	17
14	18
15	19
16	20
17	22
18	23
19	25
20	26
21	27
22	28
23	30
24	31
25	33
26	34
27	35
28	36
29	38
30	39
31	41
32	42
33	43
34	44
35	46
36	47
37	49
38	50
39	51
40	52
41	54
42	55
43	57
44	58
45	59
46	60
47	62
48	63
49	65
50	66
51	67
52	68
53	70
54	71
55	73
56	74
57	75
58	76
59	78
60	79
61	81
62	82
63	83
64	84
65	86
66	87

[1,2,3,4,6,7,9,10,11,12,14,15,17,18,19,20,22,23, 25,26,27,28,30,31,33,34,35,36,38,39,41,42,43,44, 46,47,49,50,51,52,54,55,57,58,59,60,62,63,65,66, 67,68,70,71,73,74,75,76,78,79,81,82,83,84,86,87]

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	9
8	10
9	11
10	12
11	14
12	15
13	17
14	18
15	19
16	20
17	22
18	23
19	25
20	26
21	27
22	28
23	30
24	31
25	33
26	34
27	35
28	36
29	38
30	39
31	41
32	42
33	43
34	44
35	46
36	47
37	49
38	50
39	51
40	52
41	54
42	55
43	57
44	58
45	59
46	60
47	62
48	63
49	65
50	66
51	67
52	68
53	70
54	71
55	73
56	74
57	75
58	76
59	78
60	79
61	81
62	82
63	83
64	84
65	86
66	87

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	9
8	10
9	11
10	12
11	14
12	15
13	17
14	18
15	19
16	20
17	22
18	23
19	25
20	26
21	27
22	28
23	30
24	31
25	33
26	34
27	35
28	36
29	38
30	39
31	41
32	42
33	43
34	44
35	46
36	47
37	49
38	50
39	51
40	52
41	54
42	55
43	57
44	58
45	59
46	60
47	62
48	63
49	65
50	66
51	67
52	68
53	70
54	71
55	73
56	74
57	75
58	76
59	78
60	79
61	81
62	82
63	83
64	84
65	86
66	87

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	9
8	10
9	11
10	12
11	14
12	15
13	17
14	18
15	19
16	20
17	22
18	23
19	25
20	26
21	27
22	28
23	30
24	31
25	33
26	34
27	35
28	36
29	38
30	39
31	41
32	42
33	43
34	44
35	46
36	47
37	49
38	50
39	51
40	52
41	54
42	55
43	57
44	58
45	59
46	60
47	62
48	63
49	65
50	66
51	67
52	68
53	70
54	71
55	73
56	74
57	75
58	76
59	78
60	79
61	81
62	82
63	83
64	84
65	86
66	87