A355755 - cp's OEIS frontend

A355755 Irregular triangle read by rows: T(n,k) is the number of unlabeled connected 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	0
3	1
4	0
5	1
6	1
7	0
8	1
9	2
10	2
11	1
12	0
13	1
14	4
15	7
16	6
17	2
18	1
19	0
20	1
21	6
22	22
23	36
24	27
25	13
26	4
27	2
28	1
29	0
30	1
31	9
32	53
33	161
34	242
35	209
36	111
37	43
38	17
39	5
40	1
41	1
42	0
43	1
44	12
45	114
46	611
47	1766
48	2903
49	2793
50	1723
51	773
52	284
53	86
54	36
55	9
56	3
57	2
58	1
59	0
60	1
61	16
62	221
63	1987
64	10517
65	33078
66	60639
67	67379
68	48035
69	24628
70	9715
71	3349
72	1049
73	310
74	105
75	36
76	9
77	4
78	1
79	1

[1, 0, 1, 0, 1, 1, 0, 1, 2, 2, 1, 0, 1, 4, 7, 6, 2, 1, 0, 1, 6, 22, 36, 27, 13, 4, 2, 1, 0, 1, 9, 53, 161, 242, 209, 111, 43, 17, 5, 1, 1, 0, 1, 12, 114, 611, 1766, 2903, 2793, 1723, 773, 284, 86, 36, 9, 3, 2, 1, 0, 1, 16, 221, 1987, 10517, 33078, 60639, 67379, 48035, 24628, 9715, 3349, 1049, 310, 105, 36, 9, 4, 1, 1]

cp's OEIS Frontend

A355755 Irregular triangle read by rows: T(n,k) is the number of unlabeled connected 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