A145888 - cp's OEIS frontend

A145888 Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} in which k is the largest entry in the cycle containing 1 (1 <= k <= n).

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	3
7	6
8	2
9	4
10	12
11	24
12	6
13	10
14	20
15	60
16	120
17	24
18	36
19	60
20	120
21	360
22	720
23	120
24	168
25	252
26	420
27	840
28	2520
29	5040
30	720
31	960
32	1344
33	2016
34	3360
35	6720
36	20160
37	40320
38	5040
39	6480
40	8640
41	12096
42	18144
43	30240
44	60480
45	181440
46	362880
47	40320
48	50400
49	64800

[1, 1, 1, 2, 1, 3, 6, 2, 4, 12, 24, 6, 10, 20, 60, 120, 24, 36, 60, 120, 360, 720, 120, 168, 252, 420, 840, 2520, 5040, 720, 960, 1344, 2016, 3360, 6720, 20160, 40320, 5040, 6480, 8640, 12096, 18144, 30240, 60480, 181440, 362880, 40320, 50400, 64800]

cp's OEIS Frontend

A145888 Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} in which k is the largest entry in the cycle containing 1 (1 <= k <= n).

Table of values

List of values