A217859 - cp's OEIS frontend

A217859 Triangular array read by rows. T(n,k) is the number of functions on n unlabeled nodes that have exactly k unique components (n >= 1, k >= 1).

n	a(n)
1	1
2	3
3	5
4	2
5	12
6	7
7	21
8	25
9	1
10	58
11	63
12	9
13	126
14	178
15	39
16	341
17	466
18	140
19	4
20	867
21	1253
22	470
23	25
24	2334
25	3418
26	1431
27	135
28	6218
29	9365
30	4358
31	544
32	6
33	17016
34	25924
35	12871
36	2042
37	50
38	46351
39	72207
40	37993
41	7056
42	291
43	127842
44	202345
45	111142
46	23483
47	1383
48	4
49	353297
50	568822
51	325359
52	75701
53	5754
54	60

[1, 3, 5, 2, 12, 7, 21, 25, 1, 58, 63, 9, 126, 178, 39, 341, 466, 140, 4, 867, 1253, 470, 25, 2334, 3418, 1431, 135, 6218, 9365, 4358, 544, 6, 17016, 25924, 12871, 2042, 50, 46351, 72207, 37993, 7056, 291, 127842, 202345, 111142, 23483, 1383, 4, 353297, 568822, 325359, 75701, 5754, 60]

cp's OEIS Frontend

A217859 Triangular array read by rows. T(n,k) is the number of functions on n unlabeled nodes that have exactly k unique components (n >= 1, k >= 1).

Table of values

List of values