A372734 - cp's OEIS frontend

A372734 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 3n points placed on the sides of an equilateral triangle when every pair of the 3 + 3n points are connected by a circle and where the points lie at the ends of the circle's diameter.

n	a(n)
0	0
1	7
2	12
3	61
4	9
5	6
6	6
7	303
8	108
9	9
10	9
11	3
12	18
13	771
14	603
15	150
16	15
17	9
18	0
19	1
20	24
21	1722
22	1740
23	339
24	81
25	3
26	0
27	1
28	30
29	3789
30	4326
31	1104
32	234
33	18
34	3
35	36
36	6907
37	8274
38	2193
39	432
40	45
41	18
42	66
43	12012
44	15504
45	4173
46	922
47	105
48	45
49	3
50	3
51	90
52	19860
53	24774
54	7389
55	1773
56	150
57	30
58	48
59	30594
60	39852
61	12438
62	2998
63	387
64	48

[0, 7, 12, 61, 9, 6, 6, 303, 108, 9, 9, 3, 18, 771, 603, 150, 15, 9, 0, 1, 24, 1722, 1740, 339, 81, 3, 0, 1, 30, 3789, 4326, 1104, 234, 18, 3, 36, 6907, 8274, 2193, 432, 45, 18, 66, 12012, 15504, 4173, 922, 105, 45, 3, 3, 90, 19860, 24774, 7389, 1773, 150, 30, 48, 30594, 39852, 12438, 2998, 387, 48]

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Table of values

List of values