A216726 - cp's OEIS frontend

A216726 Triangle read by rows: number of circular permutations of [1..n] with k modular progressions of rise 1, distance 2 and length 3 (n >= 3, 0 <= k <= n).

n	a(n)
3	11
4	0
5	0
6	1
7	6
8	0
9	0
10	0
11	0
12	18
13	5
14	0
15	0
16	0
17	1
18	93
19	18
20	9
21	0
22	0
23	0
24	0
25	600
26	84
27	28
28	7
29	0
30	0
31	0
32	1
33	4320
34	512
35	192
36	0
37	16
38	0
39	0
40	0
41	0
42	35168
43	4122
44	810
45	156
46	54
47	9
48	0
49	0
50	0
51	1
52	321630
53	34000
54	5625
55	1400
56	200
57	0
58	25
59	0
60	0
61	0
62	0

[11, 0, 0, 1, 6, 0, 0, 0, 0, 18, 5, 0, 0, 0, 1, 93, 18, 9, 0, 0, 0, 0, 600, 84, 28, 7, 0, 0, 0, 1, 4320, 512, 192, 0, 16, 0, 0, 0, 0, 35168, 4122, 810, 156, 54, 9, 0, 0, 0, 1, 321630, 34000, 5625, 1400, 200, 0, 25, 0, 0, 0, 0]

cp's OEIS Frontend

A216726 Triangle read by rows: number of circular permutations of [1..n] with k modular progressions of rise 1, distance 2 and length 3 (n >= 3, 0 <= k <= n).

Table of values

List of values