A292105 - cp's OEIS frontend

A292105 Irregular triangle read by rows: T(n,k) = the number of interior points that are the intersections of exactly k chords in the configuration A006561(n) (n >= 1, k >= 1).

n	a(n)
1	0
2	0
3	0
4	0
5	1
6	0
7	5
8	0
9	12
10	1
11	0
12	35
13	0
14	40
15	8
16	1
17	0
18	126
19	0
20	140
21	20
22	0
23	1
24	0
25	330
26	0
27	228
28	60
29	12
30	0
31	1
32	0
33	715
34	0
35	644
36	112
37	0
38	0
39	0
40	1
41	0
42	1365
43	0
44	1168
45	208
46	0
47	0
48	0
49	0
50	1
51	0
52	2380
53	0
54	1512
55	216
56	54
57	54
58	0
59	0
60	0
61	1
62	0
63	3876
64	0
65	3360
66	480
67	0
68	0
69	0
70	0
71	0
72	0
73	1
74	0
75	5985

[0, 0, 0, 0, 1, 0, 5, 0, 12, 1, 0, 35, 0, 40, 8, 1, 0, 126, 0, 140, 20, 0, 1, 0, 330, 0, 228, 60, 12, 0, 1, 0, 715, 0, 644, 112, 0, 0, 0, 1, 0, 1365, 0, 1168, 208, 0, 0, 0, 0, 1, 0, 2380, 0, 1512, 216, 54, 54, 0, 0, 0, 1, 0, 3876, 0, 3360, 480, 0, 0, 0, 0, 0, 0, 1, 0, 5985]

cp's OEIS Frontend

A292105 Irregular triangle read by rows: T(n,k) = the number of interior points that are the intersections of exactly k chords in the configuration A006561(n) (n >= 1, k >= 1).

Table of values

List of values