A361223 - cp's OEIS frontend

A361223 Maximum number of inequivalent permutations of a partition of n, where two permutations are equivalent if they are reversals of each other.

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	4
7	6
8	10
9	16
10	30
11	54
12	84
13	140
14	252
15	420
16	756
17	1260
18	2520
19	4620
20	7920
21	13860
22	27720
23	51480
24	90120
25	180180
26	337890
27	600600
28	1081080
29	2042040
30	3675672
31	6348888
32	12252240
33	23279256
34	42325920
35	77597520
36	148140720
37	271591320
38	480507720
39	892371480

[1, 1, 1, 2, 2, 4, 6, 10, 16, 30, 54, 84, 140, 252, 420, 756, 1260, 2520, 4620, 7920, 13860, 27720, 51480, 90120, 180180, 337890, 600600, 1081080, 2042040, 3675672, 6348888, 12252240, 23279256, 42325920, 77597520, 148140720, 271591320, 480507720, 892371480]

cp's OEIS Frontend

A361223 Maximum number of inequivalent permutations of a partition of n, where two permutations are equivalent if they are reversals of each other.

Table of values

List of values