A242525 - cp's OEIS frontend

A242525 Number of cyclic arrangements of S={1,2,...,n} such that the difference between any two neighbors is at most 3.

n	a(n)
1	1
2	1
3	1
4	3
5	6
6	10
7	17
8	31
9	57
10	104
11	188
12	340
13	616
14	1117
15	2025
16	3670
17	6651
18	12054
19	21847
20	39596
21	71764
22	130065
23	235730
24	427238
25	774328
26	1403395
27	2543518
28	4609881
29	8354965
30	15142569
31	27444447
32	49740415
33	90149708
34	163387657
35	296124381
36	536696900

[1, 1, 1, 3, 6, 10, 17, 31, 57, 104, 188, 340, 616, 1117, 2025, 3670, 6651, 12054, 21847, 39596, 71764, 130065, 235730, 427238, 774328, 1403395, 2543518, 4609881, 8354965, 15142569, 27444447, 49740415, 90149708, 163387657, 296124381, 536696900]

cp's OEIS Frontend

A242525 Number of cyclic arrangements of S={1,2,...,n} such that the difference between any two neighbors is at most 3.

Table of values

List of values