A235942 - cp's OEIS frontend

A235942 Number of positions (cyclic permutations) of circular permutations with exactly one (unspecified) increasing or decreasing modular 3-sequence, with clockwise and counterclockwise traversals counted as distinct.

n	a(n)
1	0
2	0
3	0
4	0
5	50
6	144
7	1078
8	7936
9	66096
10	611200
11	6248682
12	69926976
13	850848414
14	11187719984
15	158122436400
16	2390945284096
17	38518483536706
18	658706393035152
19	11918123304961222
20	227474585229393600
21	4567806759318652080

[0, 0, 0, 0, 50, 144, 1078, 7936, 66096, 611200, 6248682, 69926976, 850848414, 11187719984, 158122436400, 2390945284096, 38518483536706, 658706393035152, 11918123304961222, 227474585229393600, 4567806759318652080]

cp's OEIS Frontend

A235942 Number of positions (cyclic permutations) of circular permutations with exactly one (unspecified) increasing or decreasing modular 3-sequence, with clockwise and counterclockwise traversals counted as distinct.

Table of values

List of values