A343882 - cp's OEIS frontend

A343882 Triangular array read by rows: T(n,k) is the number of transitive relations on n labeled nodes with exactly k connected components.

n	a(n)
0	1
1	0
2	2
3	0
4	9
5	4
6	0
7	109
8	54
9	8
10	0
11	2647
12	1115
13	216
14	16
15	0
16	110481
17	36280
18	6790
19	720
20	32
21	0
22	7291543
23	1801927
24	287475
25	32020
26	2160
27	64
28	0
29	726434549
30	133060816
31	16873619
32	1718290
33	129080
34	6048
35	128
36	0
37	106312974249
38	14380028959
39	1387285830
40	118346473
41	8584240
42	467488
43	16128
44	256

[1, 0, 2, 0, 9, 4, 0, 109, 54, 8, 0, 2647, 1115, 216, 16, 0, 110481, 36280, 6790, 720, 32, 0, 7291543, 1801927, 287475, 32020, 2160, 64, 0, 726434549, 133060816, 16873619, 1718290, 129080, 6048, 128, 0, 106312974249, 14380028959, 1387285830, 118346473, 8584240, 467488, 16128, 256]

cp's OEIS Frontend

A343882 Triangular array read by rows: T(n,k) is the number of transitive relations on n labeled nodes with exactly k connected components.

Table of values

List of values