A326278 - cp's OEIS frontend

A326278 Number of n-vertex, 2-edge multigraphs that are not nesting. Number of n-vertex, 2-edge multigraphs that are not crossing.

n	a(n)
0	0
1	0
2	1
3	9
4	34
5	90
6	195
7	371
8	644
9	1044
10	1605
11	2365
12	3366
13	4654
14	6279
15	8295
16	10760
17	13736
18	17289
19	21489
20	26410
21	32130
22	38731
23	46299
24	54924
25	64700
26	75725
27	88101
28	101934
29	117334
30	134415
31	153295
32	174096
33	196944
34	221969
35	249305
36	279090
37	311466
38	346579
39	384579

[0, 0, 1, 9, 34, 90, 195, 371, 644, 1044, 1605, 2365, 3366, 4654, 6279, 8295, 10760, 13736, 17289, 21489, 26410, 32130, 38731, 46299, 54924, 64700, 75725, 88101, 101934, 117334, 134415, 153295, 174096, 196944, 221969, 249305, 279090, 311466, 346579, 384579]

cp's OEIS Frontend

A326278 Number of n-vertex, 2-edge multigraphs that are not nesting. Number of n-vertex, 2-edge multigraphs that are not crossing.

Table of values

List of values