A198303 - cp's OEIS frontend

A198303 Irregular triangle C(n,g) counting connected trivalent simple graphs on 2n vertices with girth exactly g.

n	a(n)
2	1
3	1
4	1
5	3
6	2
7	13
8	5
9	1
10	63
11	20
12	2
13	399
14	101
15	8
16	1
17	3268
18	743
19	48
20	1
21	33496
22	7350
23	450
24	5
25	412943
26	91763
27	5751
28	32
29	5883727
30	1344782
31	90553
32	385
33	94159721
34	22160335
35	1612905
36	7573
37	1
38	1661723296
39	401278984
40	31297357
41	181224
42	3
43	31954666517

[1, 1, 1, 3, 2, 13, 5, 1, 63, 20, 2, 399, 101, 8, 1, 3268, 743, 48, 1, 33496, 7350, 450, 5, 412943, 91763, 5751, 32, 5883727, 1344782, 90553, 385, 94159721, 22160335, 1612905, 7573, 1, 1661723296, 401278984, 31297357, 181224, 3, 31954666517]

cp's OEIS Frontend

A198303 Irregular triangle C(n,g) counting connected trivalent simple graphs on 2n vertices with girth exactly g.

Table of values

List of values