A305750 - cp's OEIS frontend

A305750 Number of achiral color patterns (set partitions) in a row or cycle of length n with 4 or fewer colors (subsets).

n	a(n)
0	1
1	1
2	2
3	3
4	7
5	11
6	27
7	43
8	107
9	171
10	427
11	683
12	1707
13	2731
14	6827
15	10923
16	27307
17	43691
18	109227
19	174763
20	436907
21	699051
22	1747627
23	2796203
24	6990507
25	11184811
26	27962027
27	44739243
28	111848107
29	178956971
30	447392427
31	715827883
32	1789569707
33	2863311531
34	7158278827

[1, 1, 2, 3, 7, 11, 27, 43, 107, 171, 427, 683, 1707, 2731, 6827, 10923, 27307, 43691, 109227, 174763, 436907, 699051, 1747627, 2796203, 6990507, 11184811, 27962027, 44739243, 111848107, 178956971, 447392427, 715827883, 1789569707, 2863311531, 7158278827]

cp's OEIS Frontend

A305750 Number of achiral color patterns (set partitions) in a row or cycle of length n with 4 or fewer colors (subsets).

Table of values

List of values