A327615 - cp's OEIS frontend

A327615 Irregular triangle read by rows: T(n,k) is the number of unlabeled multigraphs with loops allowed and n edges covering k vertices, n >= 1, 1 <= k <= 2*n.

n	a(n)
1	1
2	1
3	1
4	3
5	2
6	1
7	1
8	5
9	8
10	6
11	2
12	1
13	1
14	8
15	19
16	25
17	16
18	7
19	2
20	1
21	1
22	11
23	40
24	73
25	73
26	47
27	19
28	7
29	2
30	1
31	1
32	15
33	77
34	194
35	263
36	232
37	133
38	58
39	20
40	7
41	2
42	1
43	1
44	19
45	132
46	454
47	835
48	951
49	719
50	397
51	164
52	61
53	20
54	7
55	2
56	1
57	1
58	24
59	217
60	984
61	2385
62	3507
63	3365
64	2306
65	1177
66	490
67	175
68	62
69	20
70	7
71	2
72	1

[1, 1, 1, 3, 2, 1, 1, 5, 8, 6, 2, 1, 1, 8, 19, 25, 16, 7, 2, 1, 1, 11, 40, 73, 73, 47, 19, 7, 2, 1, 1, 15, 77, 194, 263, 232, 133, 58, 20, 7, 2, 1, 1, 19, 132, 454, 835, 951, 719, 397, 164, 61, 20, 7, 2, 1, 1, 24, 217, 984, 2385, 3507, 3365, 2306, 1177, 490, 175, 62, 20, 7, 2, 1]

cp's OEIS Frontend

A327615 Irregular triangle read by rows: T(n,k) is the number of unlabeled multigraphs with loops allowed and n edges covering k vertices, n >= 1, 1 <= k <= 2*n.

Table of values

List of values