A123542 - cp's OEIS frontend

A123542 Triangular array T(n,k) giving number of 3-connected graphs with n labeled nodes and k edges (n >= 4, ceiling(3*n/2) <= k <= n(n-1)/2).

n	a(n)
4	1
5	15
6	10
7	1
8	70
9	492
10	690
11	395
12	105
13	15
14	1
15	5040
16	28595
17	58905
18	63990
19	42392
20	18732
21	5880
22	1330
23	210
24	21
25	1
26	16800
27	442680
28	2485920
29	6629056
30	10684723
31	11716068
32	9409806
33	5824980
34	2872317
35	1147576
36	373156
37	98112
38	20475
39	3276

[1, 15, 10, 1, 70, 492, 690, 395, 105, 15, 1, 5040, 28595, 58905, 63990, 42392, 18732, 5880, 1330, 210, 21, 1, 16800, 442680, 2485920, 6629056, 10684723, 11716068, 9409806, 5824980, 2872317, 1147576, 373156, 98112, 20475, 3276]

cp's OEIS Frontend

A123542 Triangular array T(n,k) giving number of 3-connected graphs with n labeled nodes and k edges (n >= 4, ceiling(3*n/2) <= k <= n(n-1)/2).

Table of values

List of values