A123547 - cp's OEIS frontend

A123547 Triangle read by rows: T(n,k) = number of unlabeled bicolored graphs with no isolated nodes having 2n nodes and k edges, with n nodes of each color. Here n >= 0, 0 <= k <= n^2.

n	a(n)
0	1
1	0
2	1
3	0
4	0
5	1
6	1
7	1
8	0
9	0
10	0
11	1
12	2
13	4
14	3
15	2
16	1
17	1
18	0
19	0
20	0
21	0
22	1
23	2
24	8
25	14
26	21
27	20
28	20
29	12
30	9
31	4
32	2
33	1
34	1
35	0
36	0
37	0
38	0
39	0
40	1
41	2
42	10
43	31
44	76
45	137
46	221
47	285
48	321
49	301
50	253
51	182
52	122
53	69
54	38
55	19
56	10
57	4
58	2
59	1
60	1
61	0
62	0
63	0
64	0
65	0
66	0
67	1
68	2
69	11
70	43
71	162
72	451
73	1121
74	2314
75	4255
76	6702

[1, 0, 1, 0, 0, 1, 1, 1, 0, 0, 0, 1, 2, 4, 3, 2, 1, 1, 0, 0, 0, 0, 1, 2, 8, 14, 21, 20, 20, 12, 9, 4, 2, 1, 1, 0, 0, 0, 0, 0, 1, 2, 10, 31, 76, 137, 221, 285, 321, 301, 253, 182, 122, 69, 38, 19, 10, 4, 2, 1, 1, 0, 0, 0, 0, 0, 0, 1, 2, 11, 43, 162, 451, 1121, 2314, 4255, 6702]

cp's OEIS Frontend

A123547 Triangle read by rows: T(n,k) = number of unlabeled bicolored graphs with no isolated nodes having 2n nodes and k edges, with n nodes of each color. Here n >= 0, 0 <= k <= n^2.

Table of values

List of values