A343257 - cp's OEIS frontend

A343257 Triangle read by rows: T(n,k) is the number of n+2-sided polygons whose points lie on a circle and with the property that one makes k turns on itself, always in the same direction (right or left) while following its edges, 1 <= k <= ceiling(n/2).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	8
7	1
8	29
9	1
10	1
11	80
12	47
13	1
14	193
15	513
16	1
17	1
18	432
19	3338
20	244
21	1
22	925
23	16633
24	7305
25	1
26	1
27	1928
28	70713
29	103616
30	1186
31	1
32	3953
33	271441
34	990289
35	92145
36	1
37	1
38	8024
39	972548
40	7438204
41	2717321
42	5536
43	1
44	16189
45	3321009
46	47629761
47	47637225
48	1076409
49	1

[1, 1, 1, 1, 1, 8, 1, 29, 1, 1, 80, 47, 1, 193, 513, 1, 1, 432, 3338, 244, 1, 925, 16633, 7305, 1, 1, 1928, 70713, 103616, 1186, 1, 3953, 271441, 990289, 92145, 1, 1, 8024, 972548, 7438204, 2717321, 5536, 1, 16189, 3321009, 47629761, 47637225, 1076409, 1]

cp's OEIS Frontend

A343257 Triangle read by rows: T(n,k) is the number of n+2-sided polygons whose points lie on a circle and with the property that one makes k turns on itself, always in the same direction (right or left) while following its edges, 1 <= k <= ceiling(n/2).

Table of values

List of values