A003401 - cp's OEIS frontend

A003401 Numbers of edges of regular polygons constructible with ruler (or, more precisely, an unmarked straightedge) and compass.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	6
7	8
8	10
9	12
10	15
11	16
12	17
13	20
14	24
15	30
16	32
17	34
18	40
19	48
20	51
21	60
22	64
23	68
24	80
25	85
26	96
27	102
28	120
29	128
30	136
31	160
32	170
33	192
34	204
35	240
36	255
37	256
38	257
39	272
40	320
41	340
42	384
43	408
44	480
45	510
46	512
47	514
48	544
49	640
50	680
51	768
52	771
53	816
54	960
55	1020
56	1024
57	1028
58	1088
59	1280
60	1285

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 120, 128, 136, 160, 170, 192, 204, 240, 255, 256, 257, 272, 320, 340, 384, 408, 480, 510, 512, 514, 544, 640, 680, 768, 771, 816, 960, 1020, 1024, 1028, 1088, 1280, 1285]

cp's OEIS Frontend

A003401 Numbers of edges of regular polygons constructible with ruler (or, more precisely, an unmarked straightedge) and compass.

Table of values

List of values