A121385 - cp's OEIS frontend

A121385 Minimal number of monochromatic three-term arithmetic progressions that a two-coloring of {1,...,n} can contain.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	1
11	2
12	2
13	3
14	4
15	5
16	6
17	7
18	8
19	10
20	12
21	14
22	16
23	18
24	20
25	22
26	24
27	26
28	28
29	31
30	34
31	37
32	40
33	43
34	46
35	49
36	52
37	55
38	58
39	62
40	66
41	70
42	74
43	78
44	82
45	86

[0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 31, 34, 37, 40, 43, 46, 49, 52, 55, 58, 62, 66, 70, 74, 78, 82, 86]

cp's OEIS Frontend

A121385 Minimal number of monochromatic three-term arithmetic progressions that a two-coloring of {1,...,n} can contain.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	1
11	2
12	2
13	3
14	4
15	5
16	6
17	7
18	8
19	10
20	12
21	14
22	16
23	18
24	20
25	22
26	24
27	26
28	28
29	31
30	34
31	37
32	40
33	43
34	46
35	49
36	52
37	55
38	58
39	62
40	66
41	70
42	74
43	78
44	82
45	86

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	1
11	2
12	2
13	3
14	4
15	5
16	6
17	7
18	8
19	10
20	12
21	14
22	16
23	18
24	20
25	22
26	24
27	26
28	28
29	31
30	34
31	37
32	40
33	43
34	46
35	49
36	52
37	55
38	58
39	62
40	66
41	70
42	74
43	78
44	82
45	86

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	1
11	2
12	2
13	3
14	4
15	5
16	6
17	7
18	8
19	10
20	12
21	14
22	16
23	18
24	20
25	22
26	24
27	26
28	28
29	31
30	34
31	37
32	40
33	43
34	46
35	49
36	52
37	55
38	58
39	62
40	66
41	70
42	74
43	78
44	82
45	86