A153343 - OEIS

A153343 as a simple table

n	a(n)
1	0
2	1
3	2
4	4
5	6
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	16
14	18
15	19
16	20
17	22
18	23
19	24
20	25
21	26
22	28
23	30
24	31
25	32
26	33
27	34
28	36
29	37
30	38
31	40
32	41
33	42
34	43
35	44
36	46
37	48
38	49
39	50
40	51
41	52
42	54
43	55
44	56
45	57
46	58
47	59
48	60
49	61
50	62
51	63
52	64
53	65
54	66
55	67
56	68
57	70
58	72
59	73
60	74
61	76
62	78
63	79
64	80
65	82
66	84
67	85
68	86
69	88

[0,1,2,4,6,7,8,9,10,12,13,14,16,18,19,20,22,23,24, 25,26,28,30,31,32,33,34,36,37,38,40,41,42,43,44, 46,48,49,50,51,52,54,55,56,57,58,59,60,61,62,63, 64,65,66,67,68,70,72,73,74,76,78,79,80,82,84,85, 86,88]

n	a(n)
1	0
2	1
3	2
4	4
5	6
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	16
14	18
15	19
16	20
17	22
18	23
19	24
20	25
21	26
22	28
23	30
24	31
25	32
26	33
27	34
28	36
29	37
30	38
31	40
32	41
33	42
34	43
35	44
36	46
37	48
38	49
39	50
40	51
41	52
42	54
43	55
44	56
45	57
46	58
47	59
48	60
49	61
50	62
51	63
52	64
53	65
54	66
55	67
56	68
57	70
58	72
59	73
60	74
61	76
62	78
63	79
64	80
65	82
66	84
67	85
68	86
69	88

n	a(n)
1	0
2	1
3	2
4	4
5	6
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	16
14	18
15	19
16	20
17	22
18	23
19	24
20	25
21	26
22	28
23	30
24	31
25	32
26	33
27	34
28	36
29	37
30	38
31	40
32	41
33	42
34	43
35	44
36	46
37	48
38	49
39	50
40	51
41	52
42	54
43	55
44	56
45	57
46	58
47	59
48	60
49	61
50	62
51	63
52	64
53	65
54	66
55	67
56	68
57	70
58	72
59	73
60	74
61	76
62	78
63	79
64	80
65	82
66	84
67	85
68	86
69	88

n	a(n)
1	0
2	1
3	2
4	4
5	6
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	16
14	18
15	19
16	20
17	22
18	23
19	24
20	25
21	26
22	28
23	30
24	31
25	32
26	33
27	34
28	36
29	37
30	38
31	40
32	41
33	42
34	43
35	44
36	46
37	48
38	49
39	50
40	51
41	52
42	54
43	55
44	56
45	57
46	58
47	59
48	60
49	61
50	62
51	63
52	64
53	65
54	66
55	67
56	68
57	70
58	72
59	73
60	74
61	76
62	78
63	79
64	80
65	82
66	84
67	85
68	86
69	88