A330660 - cp's OEIS frontend

A330660 Triangle read by rows: T(n,k) is the number of polygons formed by connecting the vertices of a regular {2*n+1}-gon such that they make k turns around the center point.

n	a(n)
0	1
1	0
2	1
3	5
4	6
5	1
6	140
7	183
8	36
9	1
10	7479
11	9982
12	2536
13	162
14	1
15	636944
16	880738
17	267664
18	28381
19	672
20	1
21	79661322
22	113973276
23	39717471
24	5860934
25	285078
26	2718
27	1
28	13781863080
29	20321795499
30	7893750308
31	1475570241
32	113442968
33	2712595
34	10908
35	1

[1, 0, 1, 5, 6, 1, 140, 183, 36, 1, 7479, 9982, 2536, 162, 1, 636944, 880738, 267664, 28381, 672, 1, 79661322, 113973276, 39717471, 5860934, 285078, 2718, 1, 13781863080, 20321795499, 7893750308, 1475570241, 113442968, 2712595, 10908, 1]

cp's OEIS Frontend

A330660 Triangle read by rows: T(n,k) is the number of polygons formed by connecting the vertices of a regular {2*n+1}-gon such that they make k turns around the center point.

Table of values

List of values