A382653 - cp's OEIS frontend

A382653 Numbers k such that a regular k-gon (k>=3) cannot be constructed with a compass, straightedge and an angle quinsector.

n	a(n)
1	7
2	9
3	13
4	14
5	18
6	19
7	21
8	23
9	26
10	27
11	28
12	29
13	31
14	35
15	36
16	37
17	38
18	39
19	42
20	43
21	45
22	46
23	47
24	49
25	52
26	53
27	54
28	56
29	57
30	58
31	59
32	61
33	62
34	63
35	65
36	67
37	69
38	70
39	71
40	72
41	73
42	74
43	76
44	77
45	78
46	79
47	81
48	83
49	84
50	86
51	87
52	89
53	90
54	91
55	92
56	93
57	94
58	95
59	97
60	98
61	99
62	103
63	104
64	105
65	106

[7, 9, 13, 14, 18, 19, 21, 23, 26, 27, 28, 29, 31, 35, 36, 37, 38, 39, 42, 43, 45, 46, 47, 49, 52, 53, 54, 56, 57, 58, 59, 61, 62, 63, 65, 67, 69, 70, 71, 72, 73, 74, 76, 77, 78, 79, 81, 83, 84, 86, 87, 89, 90, 91, 92, 93, 94, 95, 97, 98, 99, 103, 104, 105, 106]

cp's OEIS Frontend

A382653 Numbers k such that a regular k-gon (k>=3) cannot be constructed with a compass, straightedge and an angle quinsector.

Table of values

List of values

n	a(n)
1	7
2	9
3	13
4	14
5	18
6	19
7	21
8	23
9	26
10	27
11	28
12	29
13	31
14	35
15	36
16	37
17	38
18	39
19	42
20	43
21	45
22	46
23	47
24	49
25	52
26	53
27	54
28	56
29	57
30	58
31	59
32	61
33	62
34	63
35	65
36	67
37	69
38	70
39	71
40	72
41	73
42	74
43	76
44	77
45	78
46	79
47	81
48	83
49	84
50	86
51	87
52	89
53	90
54	91
55	92
56	93
57	94
58	95
59	97
60	98
61	99
62	103
63	104
64	105
65	106

n	a(n)
1	7
2	9
3	13
4	14
5	18
6	19
7	21
8	23
9	26
10	27
11	28
12	29
13	31
14	35
15	36
16	37
17	38
18	39
19	42
20	43
21	45
22	46
23	47
24	49
25	52
26	53
27	54
28	56
29	57
30	58
31	59
32	61
33	62
34	63
35	65
36	67
37	69
38	70
39	71
40	72
41	73
42	74
43	76
44	77
45	78
46	79
47	81
48	83
49	84
50	86
51	87
52	89
53	90
54	91
55	92
56	93
57	94
58	95
59	97
60	98
61	99
62	103
63	104
64	105
65	106

n	a(n)
1	7
2	9
3	13
4	14
5	18
6	19
7	21
8	23
9	26
10	27
11	28
12	29
13	31
14	35
15	36
16	37
17	38
18	39
19	42
20	43
21	45
22	46
23	47
24	49
25	52
26	53
27	54
28	56
29	57
30	58
31	59
32	61
33	62
34	63
35	65
36	67
37	69
38	70
39	71
40	72
41	73
42	74
43	76
44	77
45	78
46	79
47	81
48	83
49	84
50	86
51	87
52	89
53	90
54	91
55	92
56	93
57	94
58	95
59	97
60	98
61	99
62	103
63	104
64	105
65	106