A084269 - cp's OEIS frontend

A084269 Triangle read by rows: T(n,k) is the number of simple connected graphs on n unlabeled nodes having chromatic number k, 1 <= k <= n.

n	a(n)
0	1
1	0
2	1
3	0
4	1
5	1
6	0
7	3
8	2
9	1
10	0
11	5
12	12
13	3
14	1
15	0
16	17
17	64
18	26
19	4
20	1
21	0
22	44
23	475
24	282
25	46
26	5
27	1
28	0
29	182
30	5036
31	5009
32	809
33	74
34	6
35	1
36	0
37	730
38	80947
39	149551
40	27794
41	1940
42	110
43	7
44	1
45	0
46	4032
47	2010328
48	7694428
49	1890221
50	113272
51	4125
52	156
53	8
54	1
55	0
56	25598
57	76115143
58	667036310
59	248580644
60	14545025
61	389583
62	8040
63	212
64	9
65	1

[1, 0, 1, 0, 1, 1, 0, 3, 2, 1, 0, 5, 12, 3, 1, 0, 17, 64, 26, 4, 1, 0, 44, 475, 282, 46, 5, 1, 0, 182, 5036, 5009, 809, 74, 6, 1, 0, 730, 80947, 149551, 27794, 1940, 110, 7, 1, 0, 4032, 2010328, 7694428, 1890221, 113272, 4125, 156, 8, 1, 0, 25598, 76115143, 667036310, 248580644, 14545025, 389583, 8040, 212, 9, 1]

cp's OEIS Frontend

A084269 Triangle read by rows: T(n,k) is the number of simple connected graphs on n unlabeled nodes having chromatic number k, 1 <= k <= n.

Table of values

List of values