A245796 - cp's OEIS frontend

A245796 T(n,k) is the number of labeled graphs of n vertices and k edges that have endpoints, where an endpoint is a vertex with degree 1.

n	a(n)
1	0
2	1
3	3
4	3
5	6
6	15
7	16
8	12
9	10
10	45
11	110
12	195
13	210
14	120
15	20
16	15
17	105
18	435
19	1320
20	2841
21	4410
22	4845
23	3360
24	1350
25	300
26	30
27	21
28	210
29	1295
30	5880
31	19887
32	51954
33	106785
34	171360
35	208565
36	186375
37	120855
38	56805
39	19110
40	4410
41	630
42	42

[0, 1, 3, 3, 6, 15, 16, 12, 10, 45, 110, 195, 210, 120, 20, 15, 105, 435, 1320, 2841, 4410, 4845, 3360, 1350, 300, 30, 21, 210, 1295, 5880, 19887, 51954, 106785, 171360, 208565, 186375, 120855, 56805, 19110, 4410, 630, 42]

cp's OEIS Frontend

A245796 T(n,k) is the number of labeled graphs of n vertices and k edges that have endpoints, where an endpoint is a vertex with degree 1.

Table of values

List of values