A068330 - cp's OEIS frontend

A068330 Consider all sublists of [(2,1),(3,2,1),(4,3,2,1),...,(n,...,4,3,2,1)] and multiply these permutations in that order. How many of the products are n-cycles?

n	a(n)
1	1
2	1
3	1
4	2
5	4
6	6
7	11
8	20
9	36
10	65
11	118
12	215
13	389
14	727
15	1366
16	2565
17	4849
18	9123
19	17168
20	32629
21	62121
22	118353
23	226603
24	434512
25	833776
26	1605642
27	3101121
28	5993545
29	11593548
30	22443167
31	43459975
32	84209877
33	163359383
34	317230531
35	616506533
36	1199200964
37	2334860706
38	4549377408
39	8870694723

[1, 1, 1, 2, 4, 6, 11, 20, 36, 65, 118, 215, 389, 727, 1366, 2565, 4849, 9123, 17168, 32629, 62121, 118353, 226603, 434512, 833776, 1605642, 3101121, 5993545, 11593548, 22443167, 43459975, 84209877, 163359383, 317230531, 616506533, 1199200964, 2334860706, 4549377408, 8870694723]

cp's OEIS Frontend

A068330 Consider all sublists of [(2,1),(3,2,1),(4,3,2,1),...,(n,...,4,3,2,1)] and multiply these permutations in that order. How many of the products are n-cycles?

Table of values

List of values