A060281 - cp's OEIS frontend

A060281 Triangle T(n,k) read by rows giving number of labeled mappings (or functional digraphs) from n points to themselves (endofunctions) with exactly k cycles, k=1..n.

n	a(n)
1	1
2	3
3	1
4	17
5	9
6	1
7	142
8	95
9	18
10	1
11	1569
12	1220
13	305
14	30
15	1
16	21576
17	18694
18	5595
19	745
20	45
21	1
22	355081
23	334369
24	113974
25	18515
26	1540
27	63
28	1
29	6805296
30	6852460
31	2581964
32	484729
33	49840
34	2842
35	84
36	1
37	148869153
38	158479488
39	64727522
40	13591116
41	1632099
42	116172
43	4830
44	108
45	1

[1, 3, 1, 17, 9, 1, 142, 95, 18, 1, 1569, 1220, 305, 30, 1, 21576, 18694, 5595, 745, 45, 1, 355081, 334369, 113974, 18515, 1540, 63, 1, 6805296, 6852460, 2581964, 484729, 49840, 2842, 84, 1, 148869153, 158479488, 64727522, 13591116, 1632099, 116172, 4830, 108, 1]

cp's OEIS Frontend

A060281 Triangle T(n,k) read by rows giving number of labeled mappings (or functional digraphs) from n points to themselves (endofunctions) with exactly k cycles, k=1..n.

Table of values

List of values