A060517 - cp's OEIS frontend

A060517 Triangle T(n,k) of series-reduced (or homeomorphically irreducible) graphs with loops on n labeled nodes and with k edges, k=0..binomial(n+1,2).

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	2
6	1
7	1
8	3
9	6
10	6
11	6
12	3
13	1
14	1
15	6
16	15
17	34
18	58
19	60
20	60
21	50
22	33
23	10
24	1
25	1
26	10
27	35
28	120
29	265
30	475
31	820
32	1200
33	1615
34	1860
35	1693
36	1060
37	425
38	105
39	15
40	1
41	1
42	15
43	75
44	330
45	990
46	2691
47	6326
48	13170
49	26205
50	48055
51	79206
52	112863
53	133535
54	124680
55	88890
56	47874

[1, 1, 0, 1, 1, 2, 1, 1, 3, 6, 6, 6, 3, 1, 1, 6, 15, 34, 58, 60, 60, 50, 33, 10, 1, 1, 10, 35, 120, 265, 475, 820, 1200, 1615, 1860, 1693, 1060, 425, 105, 15, 1, 1, 15, 75, 330, 990, 2691, 6326, 13170, 26205, 48055, 79206, 112863, 133535, 124680, 88890, 47874]

cp's OEIS Frontend

A060517 Triangle T(n,k) of series-reduced (or homeomorphically irreducible) graphs with loops on n labeled nodes and with k edges, k=0..binomial(n+1,2).

Table of values

List of values