A217563 - cp's OEIS frontend

A217563 Irregular triangular array read by rows. T(n,k) is the number of weakly connected relations on n labeled nodes with k arcs. (n>=0, 0<=k<=n^2).

n	a(n)
0	1
1	1
2	1
3	0
4	2
5	5
6	4
7	1
8	0
9	0
10	12
11	56
12	111
13	123
14	84
15	36
16	9
17	1
18	0
19	0
20	0
21	128
22	944
23	3264
24	7096
25	10936
26	12687
27	11400
28	8004
29	4368
30	1820
31	560
32	120
33	16
34	1
35	0
36	0
37	0
38	0
39	2000
40	21104
41	109400
42	373920
43	950725
44	1915405
45	3168880
46	4394760
47	5169230
48	5188390
49	4454000

[1, 1, 1, 0, 2, 5, 4, 1, 0, 0, 12, 56, 111, 123, 84, 36, 9, 1, 0, 0, 0, 128, 944, 3264, 7096, 10936, 12687, 11400, 8004, 4368, 1820, 560, 120, 16, 1, 0, 0, 0, 0, 2000, 21104, 109400, 373920, 950725, 1915405, 3168880, 4394760, 5169230, 5188390, 4454000]

cp's OEIS Frontend

A217563 Irregular triangular array read by rows. T(n,k) is the number of weakly connected relations on n labeled nodes with k arcs. (n>=0, 0<=k<=n^2).

Table of values

List of values