A239074 - cp's OEIS frontend

A239074 Given a circle of radius R into which small circles of radius R/2^n are packed in a "hexagonal pattern" (see Comments), a(n) is the number of points at which a small circle is tangent to the big circle.

n	a(n)
1	2
2	2
3	6
4	2
5	6
6	6
7	6
8	2
9	18
10	6
11	2
12	18
13	6
14	18
15	54
16	2
17	6
18	54
19	6
20	6
21	90
22	2
23	2
24	54
25	54
26	18
27	54
28	18
29	6
30	162
31	6
32	2
33	18
34	6
35	18
36	1458
37	18
38	18
39	162
40	18
41	2
42	810
43	6
44	18
45	1458
46	2
47	6
48	486
49	18
50	162
51	486
52	54
53	6
54	486
55	18
56	54
57	162
58	18
59	2
60	4374
61	6
62	18
63	2430
64	6
65	54
66	162
67	18
68	18
69	18
70	54

[2, 2, 6, 2, 6, 6, 6, 2, 18, 6, 2, 18, 6, 18, 54, 2, 6, 54, 6, 6, 90, 2, 2, 54, 54, 18, 54, 18, 6, 162, 6, 2, 18, 6, 18, 1458, 18, 18, 162, 18, 2, 810, 6, 18, 1458, 2, 6, 486, 18, 162, 486, 54, 6, 486, 18, 54, 162, 18, 2, 4374, 6, 18, 2430, 6, 54, 162, 18, 18, 18, 54]

cp's OEIS Frontend

A239074 Given a circle of radius R into which small circles of radius R/2^n are packed in a "hexagonal pattern" (see Comments), a(n) is the number of points at which a small circle is tangent to the big circle.

Table of values

List of values