A005838 - cp's OEIS frontend

A005838 Lexicographically earliest increasing sequence of positive numbers that contains no arithmetic progression of length 6.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	17
15	18
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	33
24	34
25	35
26	36
27	37
28	39
29	43
30	44
31	45
32	46
33	47
34	49
35	50
36	51
37	52
38	59
39	60
40	62
41	63
42	64
43	65
44	66
45	68
46	69
47	71
48	73
49	77
50	85
51	87
52	88
53	89
54	90
55	91
56	93
57	96
58	97
59	98
60	99
61	100
62	103
63	104
64	107
65	111
66	114
67	115
68	117
69	118
70	120

[1, 2, 3, 4, 5, 7, 8, 9, 10, 12, 13, 14, 15, 17, 18, 19, 20, 22, 23, 24, 25, 26, 33, 34, 35, 36, 37, 39, 43, 44, 45, 46, 47, 49, 50, 51, 52, 59, 60, 62, 63, 64, 65, 66, 68, 69, 71, 73, 77, 85, 87, 88, 89, 90, 91, 93, 96, 97, 98, 99, 100, 103, 104, 107, 111, 114, 115, 117, 118, 120]

cp's OEIS Frontend

A005838 Lexicographically earliest increasing sequence of positive numbers that contains no arithmetic progression of length 6.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	17
15	18
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	33
24	34
25	35
26	36
27	37
28	39
29	43
30	44
31	45
32	46
33	47
34	49
35	50
36	51
37	52
38	59
39	60
40	62
41	63
42	64
43	65
44	66
45	68
46	69
47	71
48	73
49	77
50	85
51	87
52	88
53	89
54	90
55	91
56	93
57	96
58	97
59	98
60	99
61	100
62	103
63	104
64	107
65	111
66	114
67	115
68	117
69	118
70	120

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	17
15	18
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	33
24	34
25	35
26	36
27	37
28	39
29	43
30	44
31	45
32	46
33	47
34	49
35	50
36	51
37	52
38	59
39	60
40	62
41	63
42	64
43	65
44	66
45	68
46	69
47	71
48	73
49	77
50	85
51	87
52	88
53	89
54	90
55	91
56	93
57	96
58	97
59	98
60	99
61	100
62	103
63	104
64	107
65	111
66	114
67	115
68	117
69	118
70	120

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	9
9	10
10	12
11	13
12	14
13	15
14	17
15	18
16	19
17	20
18	22
19	23
20	24
21	25
22	26
23	33
24	34
25	35
26	36
27	37
28	39
29	43
30	44
31	45
32	46
33	47
34	49
35	50
36	51
37	52
38	59
39	60
40	62
41	63
42	64
43	65
44	66
45	68
46	69
47	71
48	73
49	77
50	85
51	87
52	88
53	89
54	90
55	91
56	93
57	96
58	97
59	98
60	99
61	100
62	103
63	104
64	107
65	111
66	114
67	115
68	117
69	118
70	120