A065825 - cp's OEIS frontend

A065825 Smallest k such that n numbers may be picked in {1,...,k} with no three terms in arithmetic progression.

n	a(n)
1	1
2	2
3	4
4	5
5	9
6	11
7	13
8	14
9	20
10	24
11	26
12	30
13	32
14	36
15	40
16	41
17	51
18	54
19	58
20	63
21	71
22	74
23	82
24	84
25	92
26	95
27	100
28	104
29	111
30	114
31	121
32	122
33	137
34	145
35	150
36	157
37	163
38	165
39	169
40	174
41	194
42	204
43	209

[1, 2, 4, 5, 9, 11, 13, 14, 20, 24, 26, 30, 32, 36, 40, 41, 51, 54, 58, 63, 71, 74, 82, 84, 92, 95, 100, 104, 111, 114, 121, 122, 137, 145, 150, 157, 163, 165, 169, 174, 194, 204, 209]

cp's OEIS Frontend

A065825 Smallest k such that n numbers may be picked in {1,...,k} with no three terms in arithmetic progression.

Table of values

List of values

n	a(n)
1	1
2	2
3	4
4	5
5	9
6	11
7	13
8	14
9	20
10	24
11	26
12	30
13	32
14	36
15	40
16	41
17	51
18	54
19	58
20	63
21	71
22	74
23	82
24	84
25	92
26	95
27	100
28	104
29	111
30	114
31	121
32	122
33	137
34	145
35	150
36	157
37	163
38	165
39	169
40	174
41	194
42	204
43	209

n	a(n)
1	1
2	2
3	4
4	5
5	9
6	11
7	13
8	14
9	20
10	24
11	26
12	30
13	32
14	36
15	40
16	41
17	51
18	54
19	58
20	63
21	71
22	74
23	82
24	84
25	92
26	95
27	100
28	104
29	111
30	114
31	121
32	122
33	137
34	145
35	150
36	157
37	163
38	165
39	169
40	174
41	194
42	204
43	209

n	a(n)
1	1
2	2
3	4
4	5
5	9
6	11
7	13
8	14
9	20
10	24
11	26
12	30
13	32
14	36
15	40
16	41
17	51
18	54
19	58
20	63
21	71
22	74
23	82
24	84
25	92
26	95
27	100
28	104
29	111
30	114
31	121
32	122
33	137
34	145
35	150
36	157
37	163
38	165
39	169
40	174
41	194
42	204
43	209