A125210 - cp's OEIS frontend

A125210 Irregular triangle read by rows: T(n,k) (n>=1, 0<=k<=n(n-1)/2) is such that Sum_k T(n,k)*q^k gives the expectation of the number of connected components in a random graph on n labeled vertices where every edge is present with probability q.

n	a(n)
1	1
2	2
3	-1
4	3
5	-3
6	0
7	1
8	4
9	-6
10	0
11	4
12	3
13	-6
14	2
15	5
16	-10
17	0
18	10
19	15
20	-18
21	-60
22	130
23	-105
24	40
25	-6
26	6
27	-15
28	0
29	20
30	45
31	-18
32	-330
33	60
34	2445
35	-6485
36	8712
37	-7260
38	3925
39	-1350
40	270
41	-24
42	7
43	-21
44	0
45	35
46	105
47	42
48	-980
49	-1950
50	11760
51	12355
52	-182721
53	589281
54	-1128820
55	1502550
56	-1471305

[1, 2, -1, 3, -3, 0, 1, 4, -6, 0, 4, 3, -6, 2, 5, -10, 0, 10, 15, -18, -60, 130, -105, 40, -6, 6, -15, 0, 20, 45, -18, -330, 60, 2445, -6485, 8712, -7260, 3925, -1350, 270, -24, 7, -21, 0, 35, 105, 42, -980, -1950, 11760, 12355, -182721, 589281, -1128820, 1502550, -1471305]

cp's OEIS Frontend

A125210 Irregular triangle read by rows: T(n,k) (n>=1, 0<=k<=n(n-1)/2) is such that Sum_k T(n,k)*q^k gives the expectation of the number of connected components in a random graph on n labeled vertices where every edge is present with probability q.

Table of values

List of values