A283753 - cp's OEIS frontend

A283753 Irregular triangular array read by rows: T(n,k) is the number of non-isomorphic unlabeled weakly connected digraphs on n nodes and with k arcs.

n	a(n)
1	1
2	1
3	1
4	3
5	4
6	4
7	1
8	1
9	8
10	22
11	37
12	47
13	38
14	27
15	13
16	5
17	1
18	1
19	27
20	108
21	326
22	667
23	1127
24	1477
25	1665
26	1489
27	1154
28	707
29	379
30	154
31	61
32	16
33	5
34	1
35	1
36	91
37	582
38	2432
39	7694
40	19646
41	42148
42	77305
43	122953
44	170315
45	206982
46	220768
47	207301
48	171008
49	124110
50	78813
51	43862
52	21209
53	8951
54	3242
55	1043
56	288
57	76
58	17
59	5
60	1
61	1
62	350
63	3024
64	17314
65	74676
66	266364
67	808620
68	2144407

[1, 1, 1, 3, 4, 4, 1, 1, 8, 22, 37, 47, 38, 27, 13, 5, 1, 1, 27, 108, 326, 667, 1127, 1477, 1665, 1489, 1154, 707, 379, 154, 61, 16, 5, 1, 1, 91, 582, 2432, 7694, 19646, 42148, 77305, 122953, 170315, 206982, 220768, 207301, 171008, 124110, 78813, 43862, 21209, 8951, 3242, 1043, 288, 76, 17, 5, 1, 1, 350, 3024, 17314, 74676, 266364, 808620, 2144407]

cp's OEIS Frontend

A283753 Irregular triangular array read by rows: T(n,k) is the number of non-isomorphic unlabeled weakly connected digraphs on n nodes and with k arcs.

Table of values

List of values