A327369 - cp's OEIS frontend

A327369 Triangle read by rows where T(n,k) is the number of labeled simple graphs with n vertices and exactly k endpoints (vertices of degree 1).

n	a(n)
0	1
1	1
2	0
3	1
4	0
5	1
6	2
7	0
8	6
9	0
10	15
11	12
12	30
13	4
14	3
15	314
16	320
17	260
18	80
19	50
20	0
21	13757
22	10890
23	5445
24	1860
25	735
26	66
27	15
28	1142968
29	640836
30	228564
31	64680
32	16800
33	2772
34	532
35	0
36	178281041
37	68362504
38	17288852
39	3666600
40	702030
41	115416
42	17892
43	1016
44	105

[1, 1, 0, 1, 0, 1, 2, 0, 6, 0, 15, 12, 30, 4, 3, 314, 320, 260, 80, 50, 0, 13757, 10890, 5445, 1860, 735, 66, 15, 1142968, 640836, 228564, 64680, 16800, 2772, 532, 0, 178281041, 68362504, 17288852, 3666600, 702030, 115416, 17892, 1016, 105]

cp's OEIS Frontend

A327369 Triangle read by rows where T(n,k) is the number of labeled simple graphs with n vertices and exactly k endpoints (vertices of degree 1).

Table of values

List of values