A358328 - cp's OEIS frontend

A358328 Triangle read by rows: T(n,k) is the number of polygons with 2n sides, of which k run through the center of a circle, on the circumference of which the 2n vertices of the polygon are arranged at equal spacing, up to rotation.

n	a(n)
0	0
1	0
2	1
3	1
4	0
5	1
6	4
7	4
8	4
9	2
10	98
11	120
12	84
13	24
14	6
15	5648
16	6912
17	4032
18	1344
19	288
20	40
21	532344
22	631680
23	351360
24	118408
25	26400
26	3840
27	322
28	72724122
29	84211200
30	45907200
31	15436800
32	3513600
33	552960
34	57600
35	3294
36	13577195574
37	15432560640
38	8305920000
39	2786273280
40	643507200
41	106122240
42	12418560
43	967680
44	40320

[0, 0, 1, 1, 0, 1, 4, 4, 4, 2, 98, 120, 84, 24, 6, 5648, 6912, 4032, 1344, 288, 40, 532344, 631680, 351360, 118408, 26400, 3840, 322, 72724122, 84211200, 45907200, 15436800, 3513600, 552960, 57600, 3294, 13577195574, 15432560640, 8305920000, 2786273280, 643507200, 106122240, 12418560, 967680, 40320]

cp's OEIS Frontend

A358328 Triangle read by rows: T(n,k) is the number of polygons with 2n sides, of which k run through the center of a circle, on the circumference of which the 2n vertices of the polygon are arranged at equal spacing, up to rotation.

Table of values

List of values

cp's OEIS Frontend

A358328 Triangle read by rows: T(n,k) is the number of polygons with 2*n sides, of which k run through the center of a circle, on the circumference of which the 2*n vertices of the polygon are arranged at equal spacing, up to rotation.

Table of values

List of values

A358328 Triangle read by rows: T(n,k) is the number of polygons with 2n sides, of which k run through the center of a circle, on the circumference of which the 2n vertices of the polygon are arranged at equal spacing, up to rotation.