A346321 - cp's OEIS frontend

A346321 Number of permutations of [n] having six 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)
6	1
7	21
8	322
9	4284
10	52941
11	627627
12	7264499
13	82948008
14	940359420
15	10628025408
16	120071145376
17	1358324810752
18	15403850755456
19	175232115148032
20	2000450203866368
21	22922052379355136
22	263639657993643008
23	3043516686354636800
24	35260990780587196416
25	409914386080322027520

[1, 21, 322, 4284, 52941, 627627, 7264499, 82948008, 940359420, 10628025408, 120071145376, 1358324810752, 15403850755456, 175232115148032, 2000450203866368, 22922052379355136, 263639657993643008, 3043516686354636800, 35260990780587196416, 409914386080322027520]

cp's OEIS Frontend

A346321 Number of permutations of [n] having six 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