A143899 - cp's OEIS frontend

A143899 Triangle read by rows: T(n,k)=number of simple graphs on n labeled nodes with k edges containing at least one cycle subgraph, n>=3, 3<=k<=C(n,2).

n	a(n)
3	1
4	4
5	15
6	6
7	1
8	10
9	85
10	252
11	210
12	120
13	45
14	10
15	1
16	20
17	285
18	1707
19	5005
20	6435
21	6435
22	5005
23	3003
24	1365
25	455
26	105
27	15
28	1
29	35
30	735
31	6972
32	37457
33	116280
34	203490
35	293930
36	352716
37	352716
38	293930
39	203490
40	116280
41	54264
42	20349
43	5985
44	1330
45	210
46	21
47	1
48	56
49	1610

[1, 4, 15, 6, 1, 10, 85, 252, 210, 120, 45, 10, 1, 20, 285, 1707, 5005, 6435, 6435, 5005, 3003, 1365, 455, 105, 15, 1, 35, 735, 6972, 37457, 116280, 203490, 293930, 352716, 352716, 293930, 203490, 116280, 54264, 20349, 5985, 1330, 210, 21, 1, 56, 1610]

cp's OEIS Frontend

A143899 Triangle read by rows: T(n,k)=number of simple graphs on n labeled nodes with k edges containing at least one cycle subgraph, n>=3, 3<=k<=C(n,2).

Table of values

List of values