A101364 - cp's OEIS frontend

A101364 In the interior of a regular n-gon with all diagonals drawn, the number of points where exactly four diagonals intersect.

n	a(n)
3	0
4	0
5	0
6	0
7	0
8	1
9	0
10	0
11	0
12	12
13	0
14	0
15	0
16	0
17	0
18	54
19	0
20	0
21	0
22	0
23	0
24	264
25	0
26	0
27	0
28	0
29	0
30	420
31	0
32	0
33	0
34	0
35	0
36	396
37	0
38	0
39	0
40	0
41	0
42	1134
43	0
44	0
45	0
46	0
47	0
48	1200
49	0
50	0
51	0
52	0
53	0
54	1296
55	0
56	0
57	0
58	0
59	0
60	3780
61	0
62	0
63	0
64	0
65	0
66	2310
67	0
68	0
69	0
70	0
71	0
72	2520
73	0
74	0
75	0
76	0
77	0
78	3276
79	0
80	0
81	0
82	0
83	0
84	3612
85	0
86	0
87	0
88	0
89	0
90	4050

[0, 0, 0, 0, 0, 1, 0, 0, 0, 12, 0, 0, 0, 0, 0, 54, 0, 0, 0, 0, 0, 264, 0, 0, 0, 0, 0, 420, 0, 0, 0, 0, 0, 396, 0, 0, 0, 0, 0, 1134, 0, 0, 0, 0, 0, 1200, 0, 0, 0, 0, 0, 1296, 0, 0, 0, 0, 0, 3780, 0, 0, 0, 0, 0, 2310, 0, 0, 0, 0, 0, 2520, 0, 0, 0, 0, 0, 3276, 0, 0, 0, 0, 0, 3612, 0, 0, 0, 0, 0, 4050]

cp's OEIS Frontend

A101364 In the interior of a regular n-gon with all diagonals drawn, the number of points where exactly four diagonals intersect.

Table of values

List of values