A217955 - cp's OEIS frontend

A217955 Triangular array read by rows. T(n,k) is the number of unlabeled graphs on n nodes that have exactly k distinct components (n >= 1).

n	a(n)
1	1
2	1
3	2
4	1
5	6
6	2
7	21
8	8
9	112
10	28
11	2
12	853
13	145
14	7
15	11117
16	1022
17	34
18	261080
19	12320
20	181
21	1
22	11716571
23	274785
24	1266
25	12
26	1006700565
27	12007355
28	14106
29	63
30	164059830476
31	1019030127
32	293756
33	407
34	50335907869219
35	165091859656
36	12362198
37	3023
38	6
39	29003487462848061
40	50502058491413
41	1032671168
42	33035
43	51
44	31397381142761241960
45	29054157815353374
46	166176421788
47	645086
48	399
49	63969560113225176176277
50	31426486309136268658
51	50672459139597
52	25830118
53	3113

[1, 1, 2, 1, 6, 2, 21, 8, 112, 28, 2, 853, 145, 7, 11117, 1022, 34, 261080, 12320, 181, 1, 11716571, 274785, 1266, 12, 1006700565, 12007355, 14106, 63, 164059830476, 1019030127, 293756, 407, 50335907869219, 165091859656, 12362198, 3023, 6, 29003487462848061, 50502058491413, 1032671168, 33035, 51, 31397381142761241960, 29054157815353374, 166176421788, 645086, 399, 63969560113225176176277, 31426486309136268658, 50672459139597, 25830118, 3113]

cp's OEIS Frontend

A217955 Triangular array read by rows. T(n,k) is the number of unlabeled graphs on n nodes that have exactly k distinct components (n >= 1).

Table of values

List of values