A355754 - cp's OEIS frontend

A355754 Irregular triangle read by rows: T(n,k) is the number of unlabeled n-node graphs with intersection number (or edge clique cover number) k; n >= 1, 0 <= k <= floor(n^2/4).

n	a(n)
1	1
2	1
3	1
4	1
5	2
6	1
7	1
8	3
9	4
10	2
11	1
12	1
13	4
14	9
15	10
16	7
17	2
18	1
19	1
20	5
21	17
22	36
23	46
24	30
25	14
26	4
27	2
28	1
29	1
30	6
31	28
32	97
33	219
34	281
35	226
36	116
37	45
38	18
39	5
40	1
41	1
42	1
43	7
44	43
45	226
46	872
47	2104
48	3170
49	2927
50	1774
51	793
52	290
53	87
54	37
55	9
56	3
57	2
58	1
59	1
60	8
61	62
62	472
63	2966
64	12882
65	36595
66	63842
67	69294
68	48881
69	24939
70	9808
71	3387
72	1059
73	313
74	107
75	37
76	9
77	4
78	1
79	1

[1, 1, 1, 1, 2, 1, 1, 3, 4, 2, 1, 1, 4, 9, 10, 7, 2, 1, 1, 5, 17, 36, 46, 30, 14, 4, 2, 1, 1, 6, 28, 97, 219, 281, 226, 116, 45, 18, 5, 1, 1, 1, 7, 43, 226, 872, 2104, 3170, 2927, 1774, 793, 290, 87, 37, 9, 3, 2, 1, 1, 8, 62, 472, 2966, 12882, 36595, 63842, 69294, 48881, 24939, 9808, 3387, 1059, 313, 107, 37, 9, 4, 1, 1]

cp's OEIS Frontend

A355754 Irregular triangle read by rows: T(n,k) is the number of unlabeled n-node graphs with intersection number (or edge clique cover number) k; n >= 1, 0 <= k <= floor(n^2/4).

Table of values

List of values