A185390 - cp's OEIS frontend

A185390 Triangular array read by rows. T(n,k) is the number of partial functions on n labeled objects in which the domain of definition contains exactly k elements such that for all i in {1,2,3,...}, (f^i)(x) is defined.

n	a(n)
0	1
1	1
2	1
3	3
4	2
5	4
6	16
7	9
8	12
9	27
10	125
11	64
12	72
13	108
14	256
15	1296
16	625
17	640
18	810
19	1280
20	3125
21	16807
22	7776
23	7500
24	8640
25	11520
26	18750
27	46656
28	262144
29	117649
30	108864
31	118125
32	143360
33	196875
34	326592
35	823543
36	4782969
37	2097152
38	1882384
39	1959552
40	2240000
41	2800000
42	3919104
43	6588344
44	16777216

[1, 1, 1, 3, 2, 4, 16, 9, 12, 27, 125, 64, 72, 108, 256, 1296, 625, 640, 810, 1280, 3125, 16807, 7776, 7500, 8640, 11520, 18750, 46656, 262144, 117649, 108864, 118125, 143360, 196875, 326592, 823543, 4782969, 2097152, 1882384, 1959552, 2240000, 2800000, 3919104, 6588344, 16777216]

cp's OEIS Frontend

A185390 Triangular array read by rows. T(n,k) is the number of partial functions on n labeled objects in which the domain of definition contains exactly k elements such that for all i in {1,2,3,...}, (f^i)(x) is defined.

Table of values

List of values