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A001068 as a simple table

n	a(n)
0	0
1	1
2	2
3	3
4	5
5	6
6	7
7	8
8	10
9	11
10	12
11	13
12	15
13	16
14	17
15	18
16	20
17	21
18	22
19	23
20	25
21	26
22	27
23	28
24	30
25	31
26	32
27	33
28	35
29	36
30	37
31	38
32	40
33	41
34	42
35	43
36	45
37	46
38	47
39	48
40	50
41	51
42	52
43	53
44	55
45	56
46	57
47	58
48	60
49	61
50	62
51	63
52	65
53	66
54	67
55	68
56	70
57	71
58	72
59	73
60	75
61	76
62	77
63	78
64	80
65	81
66	82
67	83
68	85
69	86
70	87
71	88

[0,1,2,3,5,6,7,8,10,11,12,13,15,16,17,18,20,21,22, 23,25,26,27,28,30,31,32,33,35,36,37,38,40,41,42, 43,45,46,47,48,50,51,52,53,55,56,57,58,60,61,62, 63,65,66,67,68,70,71,72,73,75,76,77,78,80,81,82, 83,85,86,87,88]

n	a(n)
0	0
1	1
2	2
3	3
4	5
5	6
6	7
7	8
8	10
9	11
10	12
11	13
12	15
13	16
14	17
15	18
16	20
17	21
18	22
19	23
20	25
21	26
22	27
23	28
24	30
25	31
26	32
27	33
28	35
29	36
30	37
31	38
32	40
33	41
34	42
35	43
36	45
37	46
38	47
39	48
40	50
41	51
42	52
43	53
44	55
45	56
46	57
47	58
48	60
49	61
50	62
51	63
52	65
53	66
54	67
55	68
56	70
57	71
58	72
59	73
60	75
61	76
62	77
63	78
64	80
65	81
66	82
67	83
68	85
69	86
70	87
71	88

n	a(n)
0	0
1	1
2	2
3	3
4	5
5	6
6	7
7	8
8	10
9	11
10	12
11	13
12	15
13	16
14	17
15	18
16	20
17	21
18	22
19	23
20	25
21	26
22	27
23	28
24	30
25	31
26	32
27	33
28	35
29	36
30	37
31	38
32	40
33	41
34	42
35	43
36	45
37	46
38	47
39	48
40	50
41	51
42	52
43	53
44	55
45	56
46	57
47	58
48	60
49	61
50	62
51	63
52	65
53	66
54	67
55	68
56	70
57	71
58	72
59	73
60	75
61	76
62	77
63	78
64	80
65	81
66	82
67	83
68	85
69	86
70	87
71	88

n	a(n)
0	0
1	1
2	2
3	3
4	5
5	6
6	7
7	8
8	10
9	11
10	12
11	13
12	15
13	16
14	17
15	18
16	20
17	21
18	22
19	23
20	25
21	26
22	27
23	28
24	30
25	31
26	32
27	33
28	35
29	36
30	37
31	38
32	40
33	41
34	42
35	43
36	45
37	46
38	47
39	48
40	50
41	51
42	52
43	53
44	55
45	56
46	57
47	58
48	60
49	61
50	62
51	63
52	65
53	66
54	67
55	68
56	70
57	71
58	72
59	73
60	75
61	76
62	77
63	78
64	80
65	81
66	82
67	83
68	85
69	86
70	87
71	88