A185340 - cp's OEIS frontend

A185340 Irregular triangle E(n,g) counting not necessarily connected 4-regular simple graphs on n vertices with girth at least g.

n	a(n)
5	1
6	1
7	2
8	6
9	1
10	16
11	0
12	60
13	2
14	266
15	2
16	1547
17	12
18	10786
19	31
20	88193
21	220
22	805579
23	1606
24	8037796
25	16829
26	86223660
27	193900
28	985883873
29	2452820
30	11946592242
31	32670332
32	1
33	152808993767
34	456028489
35	2
36	2056701139136
37	6636066134
38	8
39	28566369866514
40	100135577994
41	131

[1, 1, 2, 6, 1, 16, 0, 60, 2, 266, 2, 1547, 12, 10786, 31, 88193, 220, 805579, 1606, 8037796, 16829, 86223660, 193900, 985883873, 2452820, 11946592242, 32670332, 1, 152808993767, 456028489, 2, 2056701139136, 6636066134, 8, 28566369866514, 100135577994, 131]

cp's OEIS Frontend

A185340 Irregular triangle E(n,g) counting not necessarily connected 4-regular simple graphs on n vertices with girth at least g.

Table of values

List of values