A245687 - cp's OEIS frontend

A245687 Number T(n,k) of endofunctions on [n] such that the minimal cardinality of the nonempty preimages equals k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

n	a(n)
0	1
1	0
2	1
3	0
4	2
5	2
6	0
7	24
8	0
9	3
10	0
11	216
12	36
13	0
14	4
15	0
16	2920
17	200
18	0
19	0
20	5
21	0
22	44100
23	2250
24	300
25	0
26	0
27	6
28	0
29	799134
30	22932
31	1470
32	0
33	0
34	0
35	7
36	0
37	16429504
38	342608
39	3136
40	1960
41	0
42	0
43	0
44	8
45	0
46	382625856
47	4638384
48	147168
49	9072
50	0
51	0
52	0
53	0
54	9
55	0
56	9918836100
57	79610850
58	1522800
59	18900
60	11340
61	0
62	0
63	0
64	0
65	10

[1, 0, 1, 0, 2, 2, 0, 24, 0, 3, 0, 216, 36, 0, 4, 0, 2920, 200, 0, 0, 5, 0, 44100, 2250, 300, 0, 0, 6, 0, 799134, 22932, 1470, 0, 0, 0, 7, 0, 16429504, 342608, 3136, 1960, 0, 0, 0, 8, 0, 382625856, 4638384, 147168, 9072, 0, 0, 0, 0, 9, 0, 9918836100, 79610850, 1522800, 18900, 11340, 0, 0, 0, 0, 10]

cp's OEIS Frontend

A245687 Number T(n,k) of endofunctions on [n] such that the minimal cardinality of the nonempty preimages equals k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.

Table of values

List of values