A347034 - cp's OEIS frontend

A347034 Triangle read by columns: T(n,k) is the number of functions from an n-element set to a k-element set that are not one-to-one, k>=n>=1.

n	a(n)
1	0
2	0
3	2
4	0
5	3
6	21
7	0
8	4
9	40
10	232
11	0
12	5
13	65
14	505
15	3005
16	0
17	6
18	96
19	936
20	7056
21	45936
22	0
23	7
24	133
25	1561
26	14287
27	112609
28	818503
29	0
30	8
31	176
32	2416
33	26048
34	241984
35	2056832
36	16736896
37	0
38	9
39	225
40	3537
41	43929
42	470961
43	4601529
44	42683841
45	387057609
46	0
47	10
48	280
49	4960
50	69760
51	848800

[0, 0, 2, 0, 3, 21, 0, 4, 40, 232, 0, 5, 65, 505, 3005, 0, 6, 96, 936, 7056, 45936, 0, 7, 133, 1561, 14287, 112609, 818503, 0, 8, 176, 2416, 26048, 241984, 2056832, 16736896, 0, 9, 225, 3537, 43929, 470961, 4601529, 42683841, 387057609, 0, 10, 280, 4960, 69760, 848800]

cp's OEIS Frontend

A347034 Triangle read by columns: T(n,k) is the number of functions from an n-element set to a k-element set that are not one-to-one, k>=n>=1.

Table of values

List of values