A046858 - cp's OEIS frontend

A046858 Irregular triangle read by rows: T(n,k) = number of directed graphs-with-loops with n nodes and k arcs (n >= 0, 0 <= k <= n^2).

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	4
6	2
7	1
8	1
9	2
10	8
11	17
12	24
13	24
14	17
15	8
16	2
17	1
18	1
19	2
20	9
21	32
22	95
23	203
24	373
25	515
26	584
27	515
28	373
29	203
30	95
31	32
32	9
33	2
34	1
35	1
36	2
37	9
38	36
39	157
40	549
41	1692
42	4374
43	9626
44	17874
45	28373
46	38486
47	44805
48	44805
49	38486
50	28373
51	17874
52	9626
53	4374
54	1692
55	549
56	157
57	36
58	9
59	2
60	1
61	1

[1, 1, 1, 1, 2, 4, 2, 1, 1, 2, 8, 17, 24, 24, 17, 8, 2, 1, 1, 2, 9, 32, 95, 203, 373, 515, 584, 515, 373, 203, 95, 32, 9, 2, 1, 1, 2, 9, 36, 157, 549, 1692, 4374, 9626, 17874, 28373, 38486, 44805, 44805, 38486, 28373, 17874, 9626, 4374, 1692, 549, 157, 36, 9, 2, 1, 1]

cp's OEIS Frontend

A046858 Irregular triangle read by rows: T(n,k) = number of directed graphs-with-loops with n nodes and k arcs (n >= 0, 0 <= k <= n^2).

Table of values

List of values