A225859 - cp's OEIS frontend

A225859 Smallest k such that n numbers can be picked in {1,...,k} with no five terms in arithmetic progression.

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	8
8	9
9	11
10	12
11	13
12	14
13	16
14	17
15	18
16	19
17	24
18	25
19	27
20	28
21	29
22	31
23	33
24	34
25	36
26	37
27	38
28	39
29	41
30	42
31	43
32	44
33	49
34	51
35	52
36	54
37	56
38	57
39	58
40	59
41	61
42	62
43	63
44	64
45	66
46	67
47	68
48	69
49	76

[1, 2, 3, 4, 6, 7, 8, 9, 11, 12, 13, 14, 16, 17, 18, 19, 24, 25, 27, 28, 29, 31, 33, 34, 36, 37, 38, 39, 41, 42, 43, 44, 49, 51, 52, 54, 56, 57, 58, 59, 61, 62, 63, 64, 66, 67, 68, 69, 76]

cp's OEIS Frontend

A225859 Smallest k such that n numbers can be picked in {1,...,k} with no five terms in arithmetic progression.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	8
8	9
9	11
10	12
11	13
12	14
13	16
14	17
15	18
16	19
17	24
18	25
19	27
20	28
21	29
22	31
23	33
24	34
25	36
26	37
27	38
28	39
29	41
30	42
31	43
32	44
33	49
34	51
35	52
36	54
37	56
38	57
39	58
40	59
41	61
42	62
43	63
44	64
45	66
46	67
47	68
48	69
49	76

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	8
8	9
9	11
10	12
11	13
12	14
13	16
14	17
15	18
16	19
17	24
18	25
19	27
20	28
21	29
22	31
23	33
24	34
25	36
26	37
27	38
28	39
29	41
30	42
31	43
32	44
33	49
34	51
35	52
36	54
37	56
38	57
39	58
40	59
41	61
42	62
43	63
44	64
45	66
46	67
47	68
48	69
49	76

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	7
7	8
8	9
9	11
10	12
11	13
12	14
13	16
14	17
15	18
16	19
17	24
18	25
19	27
20	28
21	29
22	31
23	33
24	34
25	36
26	37
27	38
28	39
29	41
30	42
31	43
32	44
33	49
34	51
35	52
36	54
37	56
38	57
39	58
40	59
41	61
42	62
43	63
44	64
45	66
46	67
47	68
48	69
49	76