A346318 - cp's OEIS frontend

A346318 Number of permutations of [n] having three cycles of the form (c1, c2, ..., c_m) where c1 = min_{i>=1} c_i and c_j = min_{i>=j} c_i or c_j = max_{i>=j} c_i.

n	a(n)
3	1
4	6
5	35
6	195
7	1078
8	5992
9	33632
10	190800
11	1093664
12	6327552
13	36904192
14	216676096
15	1279012352
16	7581628416
17	45086720000
18	268774576128
19	1605129183232
20	9598558142464
21	57453899350016
22	344139257020416
23	2062361588793344
24	12363724057214976
25	74138363625472000

[1, 6, 35, 195, 1078, 5992, 33632, 190800, 1093664, 6327552, 36904192, 216676096, 1279012352, 7581628416, 45086720000, 268774576128, 1605129183232, 9598558142464, 57453899350016, 344139257020416, 2062361588793344, 12363724057214976, 74138363625472000]

cp's OEIS Frontend

A346318 Number of permutations of [n] having three cycles of the form (c1, c2, ..., c_m) where c1 = min_{i>=1} c_i and c_j = min_{i>=j} c_i or c_j = max_{i>=j} c_i.

Table of values

List of values