A256589 - cp's OEIS frontend

A256589 Triangle read by rows: T(n,k) divided by (n-k+1)! is the expected value of number of possible subsets in a partition of a set of n elements with no subsets of cardinality smaller than k.

n	a(n)
1	1
2	3
3	1
4	11
5	2
6	1
7	50
8	8
9	2
10	1
11	274
12	36
13	6
14	2
15	1
16	1764
17	200
18	30
19	6
20	2
21	1
22	13068
23	1300
24	168
25	24
26	6
27	2
28	1
29	109584
30	9720
31	1080
32	144
33	24
34	6
35	2
36	1
37	1026576
38	82180
39	8100
40	960
41	120
42	24
43	6
44	2
45	1

[1, 3, 1, 11, 2, 1, 50, 8, 2, 1, 274, 36, 6, 2, 1, 1764, 200, 30, 6, 2, 1, 13068, 1300, 168, 24, 6, 2, 1, 109584, 9720, 1080, 144, 24, 6, 2, 1, 1026576, 82180, 8100, 960, 120, 24, 6, 2, 1]

cp's OEIS Frontend

A256589 Triangle read by rows: T(n,k) divided by (n-k+1)! is the expected value of number of possible subsets in a partition of a set of n elements with no subsets of cardinality smaller than k.

Table of values

List of values