A173905 - OEIS

A173905 as a simple table

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	12
11	14
12	15
13	16
14	18
15	20
16	21
17	22
18	24
19	25
20	26
21	27
22	28
23	30
24	32
25	33
26	34
27	35
28	36
29	38
30	39
31	40
32	42
33	44
34	45
35	46
36	48
37	49
38	50
39	51
40	52
41	54
42	55
43	56
44	57
45	58
46	60
47	62
48	63
49	64
50	65
51	66
52	68
53	69
54	70
55	72
56	74
57	75
58	76
59	77
60	78
61	80
62	81
63	82
64	84
65	85
66	86
67	87
68	88
69	90
70	91
71	92
72	93

[0,1,2,3,4,6,8,9,10,12,14,15,16,18,20,21,22,24,25, 26,27,28,30,32,33,34,35,36,38,39,40,42,44,45,46, 48,49,50,51,52,54,55,56,57,58,60,62,63,64,65,66, 68,69,70,72,74,75,76,77,78,80,81,82,84,85,86,87, 88,90,91,92,93]

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	12
11	14
12	15
13	16
14	18
15	20
16	21
17	22
18	24
19	25
20	26
21	27
22	28
23	30
24	32
25	33
26	34
27	35
28	36
29	38
30	39
31	40
32	42
33	44
34	45
35	46
36	48
37	49
38	50
39	51
40	52
41	54
42	55
43	56
44	57
45	58
46	60
47	62
48	63
49	64
50	65
51	66
52	68
53	69
54	70
55	72
56	74
57	75
58	76
59	77
60	78
61	80
62	81
63	82
64	84
65	85
66	86
67	87
68	88
69	90
70	91
71	92
72	93

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	12
11	14
12	15
13	16
14	18
15	20
16	21
17	22
18	24
19	25
20	26
21	27
22	28
23	30
24	32
25	33
26	34
27	35
28	36
29	38
30	39
31	40
32	42
33	44
34	45
35	46
36	48
37	49
38	50
39	51
40	52
41	54
42	55
43	56
44	57
45	58
46	60
47	62
48	63
49	64
50	65
51	66
52	68
53	69
54	70
55	72
56	74
57	75
58	76
59	77
60	78
61	80
62	81
63	82
64	84
65	85
66	86
67	87
68	88
69	90
70	91
71	92
72	93

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	6
7	8
8	9
9	10
10	12
11	14
12	15
13	16
14	18
15	20
16	21
17	22
18	24
19	25
20	26
21	27
22	28
23	30
24	32
25	33
26	34
27	35
28	36
29	38
30	39
31	40
32	42
33	44
34	45
35	46
36	48
37	49
38	50
39	51
40	52
41	54
42	55
43	56
44	57
45	58
46	60
47	62
48	63
49	64
50	65
51	66
52	68
53	69
54	70
55	72
56	74
57	75
58	76
59	77
60	78
61	80
62	81
63	82
64	84
65	85
66	86
67	87
68	88
69	90
70	91
71	92
72	93