A020660 - cp's OEIS frontend

A020660 Lexicographically earliest increasing sequence of positive numbers that contains no arithmetic progression of length 8.

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]

cp's OEIS Frontend

A020660 Lexicographically earliest increasing sequence of positive numbers that contains no arithmetic progression of length 8.

Table of values

List of values

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