A216719 - cp's OEIS frontend

A216719 Triangle read by rows: number of circular permutations of [1..n] with k progressions of rise 1, distance 2 and length 3 (n >= 3, k >= 0).

n	a(n)
3	2
4	6
5	22
6	2
7	109
8	10
9	1
10	657
11	55
12	7
13	1
14	4625
15	356
16	54
17	4
18	1
19	37186
20	2723
21	362
22	44
23	4
24	1
25	336336
26	23300
27	2837
28	368
29	34
30	4
31	1
32	3379058
33	220997
34	25408
35	2967
36	330
37	35
38	4
39	1
40	37328103
41	2308564
42	249736
43	26964
44	3100
45	292
46	36
47	4
48	1

[2, 6, 22, 2, 109, 10, 1, 657, 55, 7, 1, 4625, 356, 54, 4, 1, 37186, 2723, 362, 44, 4, 1, 336336, 23300, 2837, 368, 34, 4, 1, 3379058, 220997, 25408, 2967, 330, 35, 4, 1, 37328103, 2308564, 249736, 26964, 3100, 292, 36, 4, 1]

cp's OEIS Frontend

A216719 Triangle read by rows: number of circular permutations of [1..n] with k progressions of rise 1, distance 2 and length 3 (n >= 3, k >= 0).

Table of values

List of values