A369801 - cp's OEIS frontend

A369801 Maximum number of segments between n points on a circle so that they can be colored in 2 colors so that each of them intersects (at an internal point) at most one other segment of the same color.

n	a(n)
2	1
3	3
4	6
5	10
6	15
7	19
8	24
9	27
10	32
11	35
12	40
13	43
14	48
15	51
16	56
17	59
18	64
19	67
20	72
21	75
22	80
23	83
24	88
25	91
26	96
27	99
28	104
29	107
30	112
31	115
32	120
33	123
34	128
35	131
36	136
37	139
38	144
39	147
40	152
41	155
42	160
43	163
44	168
45	171
46	176
47	179
48	184
49	187
50	192
51	195
52	200
53	203
54	208
55	211
56	216
57	219
58	224
59	227

[1, 3, 6, 10, 15, 19, 24, 27, 32, 35, 40, 43, 48, 51, 56, 59, 64, 67, 72, 75, 80, 83, 88, 91, 96, 99, 104, 107, 112, 115, 120, 123, 128, 131, 136, 139, 144, 147, 152, 155, 160, 163, 168, 171, 176, 179, 184, 187, 192, 195, 200, 203, 208, 211, 216, 219, 224, 227]

cp's OEIS Frontend

A369801 Maximum number of segments between n points on a circle so that they can be colored in 2 colors so that each of them intersects (at an internal point) at most one other segment of the same color.

Table of values

List of values

n	a(n)
2	1
3	3
4	6
5	10
6	15
7	19
8	24
9	27
10	32
11	35
12	40
13	43
14	48
15	51
16	56
17	59
18	64
19	67
20	72
21	75
22	80
23	83
24	88
25	91
26	96
27	99
28	104
29	107
30	112
31	115
32	120
33	123
34	128
35	131
36	136
37	139
38	144
39	147
40	152
41	155
42	160
43	163
44	168
45	171
46	176
47	179
48	184
49	187
50	192
51	195
52	200
53	203
54	208
55	211
56	216
57	219
58	224
59	227

n	a(n)
2	1
3	3
4	6
5	10
6	15
7	19
8	24
9	27
10	32
11	35
12	40
13	43
14	48
15	51
16	56
17	59
18	64
19	67
20	72
21	75
22	80
23	83
24	88
25	91
26	96
27	99
28	104
29	107
30	112
31	115
32	120
33	123
34	128
35	131
36	136
37	139
38	144
39	147
40	152
41	155
42	160
43	163
44	168
45	171
46	176
47	179
48	184
49	187
50	192
51	195
52	200
53	203
54	208
55	211
56	216
57	219
58	224
59	227

n	a(n)
2	1
3	3
4	6
5	10
6	15
7	19
8	24
9	27
10	32
11	35
12	40
13	43
14	48
15	51
16	56
17	59
18	64
19	67
20	72
21	75
22	80
23	83
24	88
25	91
26	96
27	99
28	104
29	107
30	112
31	115
32	120
33	123
34	128
35	131
36	136
37	139
38	144
39	147
40	152
41	155
42	160
43	163
44	168
45	171
46	176
47	179
48	184
49	187
50	192
51	195
52	200
53	203
54	208
55	211
56	216
57	219
58	224
59	227