A372617 - cp's OEIS frontend

A372617 Irregular table read by rows: T(n,k) is the number of k-gons, k>=2, among all distinct circles that can be constructed from the 3 vertices and the equally spaced 3*n points placed on the sides of an equilateral triangle, using only a compass.

n	a(n)
0	0
1	7
2	3
3	70
4	45
5	3
6	6
7	312
8	273
9	33
10	6
11	1017
12	1119
13	186
14	36
15	3
16	0
17	1
18	6
19	2943
20	4092
21	702
22	150
23	15
24	3
25	1
26	6
27	6210
28	8556
29	1941
30	351
31	45
32	3
33	3
34	6
35	12946
36	20034
37	4632
38	735
39	99
40	9
41	6
42	20925
43	32685
44	7944
45	1435
46	162
47	27
48	18
49	37704
50	59520
51	15375
52	2589
53	324
54	84
55	30
56	55326
57	87138
58	22626
59	4456
60	474
61	96
62	3

[0, 7, 3, 70, 45, 3, 6, 312, 273, 33, 6, 1017, 1119, 186, 36, 3, 0, 1, 6, 2943, 4092, 702, 150, 15, 3, 1, 6, 6210, 8556, 1941, 351, 45, 3, 3, 6, 12946, 20034, 4632, 735, 99, 9, 6, 20925, 32685, 7944, 1435, 162, 27, 18, 37704, 59520, 15375, 2589, 324, 84, 30, 55326, 87138, 22626, 4456, 474, 96, 3]

cp's OEIS Frontend

A372617 Irregular table read by rows: T(n,k) is the number of k-gons, k>=2, among all distinct circles that can be constructed from the 3 vertices and the equally spaced 3*n points placed on the sides of an equilateral triangle, using only a compass.

Table of values

List of values