A335102 - cp's OEIS frontend

A335102 Irregular triangle read by rows: consider the regular n-gon defined in A007678. T(n,k) (n >= 1, k >= 4+2*t where t>=0) is the number of non-boundary vertices in the n-gon at which k polygons meet.

n	a(n)
1	0
2	0
3	0
4	1
5	5
6	12
7	1
8	35
9	40
10	8
11	1
12	126
13	140
14	20
15	0
16	1
17	330
18	228
19	60
20	12
21	0
22	1
23	715
24	644
25	112
26	0
27	0
28	0
29	1
30	1365
31	1168
32	208
33	0
34	0
35	0
36	0
37	1
38	2380
39	1512
40	216
41	54
42	54
43	0
44	0
45	0
46	1
47	3876
48	3360
49	480
50	0
51	0
52	0
53	0
54	0
55	0
56	1
57	5985
58	5280
59	660
60	0
61	0
62	0
63	0
64	0
65	0
66	0
67	1
68	8855
69	6144
70	864
71	264
72	24
73	0
74	0
75	0
76	0
77	0
78	0
79	12
80	12650

[0, 0, 0, 1, 5, 12, 1, 35, 40, 8, 1, 126, 140, 20, 0, 1, 330, 228, 60, 12, 0, 1, 715, 644, 112, 0, 0, 0, 1, 1365, 1168, 208, 0, 0, 0, 0, 1, 2380, 1512, 216, 54, 54, 0, 0, 0, 1, 3876, 3360, 480, 0, 0, 0, 0, 0, 0, 1, 5985, 5280, 660, 0, 0, 0, 0, 0, 0, 0, 1, 8855, 6144, 864, 264, 24, 0, 0, 0, 0, 0, 0, 12, 12650]

cp's OEIS Frontend

A335102 Irregular triangle read by rows: consider the regular n-gon defined in A007678. T(n,k) (n >= 1, k >= 4+2*t where t>=0) is the number of non-boundary vertices in the n-gon at which k polygons meet.

Table of values

List of values