A101030 - cp's OEIS frontend

A101030 Triangle read by rows: T(n,k) = number of functions from an n-element set into but not onto a k-element set.

n	a(n)
1	0
2	0
3	2
4	0
5	2
6	21
7	0
8	2
9	45
10	232
11	0
12	2
13	93
14	784
15	3005
16	0
17	2
18	189
19	2536
20	13825
21	45936
22	0
23	2
24	381
25	7984
26	61325
27	264816
28	818503
29	0
30	2
31	765
32	24712
33	264625
34	1488096
35	5623681
36	16736896
37	0
38	2
39	1533
40	75664
41	1119005
42	8172576
43	38025127
44	132766208
45	387057609
46	0

[0, 0, 2, 0, 2, 21, 0, 2, 45, 232, 0, 2, 93, 784, 3005, 0, 2, 189, 2536, 13825, 45936, 0, 2, 381, 7984, 61325, 264816, 818503, 0, 2, 765, 24712, 264625, 1488096, 5623681, 16736896, 0, 2, 1533, 75664, 1119005, 8172576, 38025127, 132766208, 387057609, 0]

cp's OEIS Frontend

A101030 Triangle read by rows: T(n,k) = number of functions from an n-element set into but not onto a k-element set.

Table of values

List of values