A331939 - cp's OEIS frontend

A331939 Triangle read by rows: Take a pentagon with all diagonals drawn, as in A331929. Then T(n,k) = number of k-sided polygons in that figure for k = 3, 4, ..., n+5.

n	a(n)
1	10
2	0
3	1
4	0
5	120
6	40
7	10
8	0
9	0
10	605
11	290
12	166
13	95
14	0
15	5
16	1750
17	1420
18	550
19	150
20	30
21	0
22	0
23	4315
24	3740
25	1920
26	640
27	95
28	20
29	5
30	6
31	9370
32	7950
33	3610
34	1200
35	220
36	20
37	10
38	0
39	0
40	17290
41	15705
42	7991
43	2885
44	520
45	75
46	20
47	5
48	0
49	0
50	29590
51	28130
52	13560
53	4320
54	860
55	150
56	0
57	0
58	0
59	0
60	0

[10, 0, 1, 0, 120, 40, 10, 0, 0, 605, 290, 166, 95, 0, 5, 1750, 1420, 550, 150, 30, 0, 0, 4315, 3740, 1920, 640, 95, 20, 5, 6, 9370, 7950, 3610, 1200, 220, 20, 10, 0, 0, 17290, 15705, 7991, 2885, 520, 75, 20, 5, 0, 0, 29590, 28130, 13560, 4320, 860, 150, 0, 0, 0, 0, 0]

cp's OEIS Frontend

A331939 Triangle read by rows: Take a pentagon with all diagonals drawn, as in A331929. Then T(n,k) = number of k-sided polygons in that figure for k = 3, 4, ..., n+5.

Table of values

List of values