A371376 - cp's OEIS frontend

A371376 Irregular table read by rows: place n equally spaced points around the circumference of a circle and then, for each pair of points, draw two distinct circles, whose radii are the same as the first circle, such that both points lie on their circumferences. T(n,k), k>=2, gives the number of k-sided regions formed.

n	a(n)
2	1
3	6
4	3
5	8
6	0
7	1
8	15
9	30
10	5
11	1
12	18
13	30
14	14
15	147
16	35
17	7
18	7
19	1
20	8
21	152
22	48
23	8
24	0
25	0
26	1
27	27
28	351
29	171
30	36
31	27
32	10
33	390
34	200
35	10
36	40
37	0
38	0
39	0
40	1
41	22
42	693
43	649
44	33
45	77
46	0
47	0
48	0
49	0
50	1
51	12
52	780
53	408
54	0
55	48
56	26
57	1404
58	1183
59	234
60	169
61	0
62	0
63	0
64	0
65	0
66	0
67	1
68	14
69	1498
70	1274
71	224
72	154
73	14
74	14
75	0
76	0
77	0
78	0
79	0
80	1

[1, 6, 3, 8, 0, 1, 15, 30, 5, 1, 18, 30, 14, 147, 35, 7, 7, 1, 8, 152, 48, 8, 0, 0, 1, 27, 351, 171, 36, 27, 10, 390, 200, 10, 40, 0, 0, 0, 1, 22, 693, 649, 33, 77, 0, 0, 0, 0, 1, 12, 780, 408, 0, 48, 26, 1404, 1183, 234, 169, 0, 0, 0, 0, 0, 0, 1, 14, 1498, 1274, 224, 154, 14, 14, 0, 0, 0, 0, 0, 1]

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