A235941 - cp's OEIS frontend

A235941 Positions (cyclic permutations) of circular permutations with exactly one (unspecified) increasing or decreasing modular 3-sequence, with clockwise and counterclockwise traversals not counted as distinct.

n	a(n)
1	0
2	0
3	0
4	0
5	25
6	72
7	539
8	3968
9	33048
10	305600
11	3124341
12	34963488
13	425424207
14	5593859992
15	79061218200
16	1195472642048
17	19259241768353
18	329353196517576
19	5959061652480611
20	113737292614696800
21	2283903379659326040

[0, 0, 0, 0, 25, 72, 539, 3968, 33048, 305600, 3124341, 34963488, 425424207, 5593859992, 79061218200, 1195472642048, 19259241768353, 329353196517576, 5959061652480611, 113737292614696800, 2283903379659326040]

cp's OEIS Frontend

A235941 Positions (cyclic permutations) of circular permutations with exactly one (unspecified) increasing or decreasing modular 3-sequence, with clockwise and counterclockwise traversals not counted as distinct.

Table of values

List of values