A305132 - cp's OEIS frontend

A305132 Number of connected graphs on n unlabeled nodes with exactly 2 cycles joined along two or more edges but not more than half each cycle and all nodes having degree at most 4.

n	a(n)
5	1
6	3
7	11
8	36
9	116
10	366
11	1151
12	3583
13	11093
14	34141
15	104489
16	318139
17	963899
18	2907276
19	8731919
20	26125538
21	77889504
22	231466147
23	685811867
24	2026481941
25	5973064855
26	17565416721
27	51547293439
28	150977445294
29	441409701444
30	1288409915625
31	3754926609800
32	10927779696264

[1, 3, 11, 36, 116, 366, 1151, 3583, 11093, 34141, 104489, 318139, 963899, 2907276, 8731919, 26125538, 77889504, 231466147, 685811867, 2026481941, 5973064855, 17565416721, 51547293439, 150977445294, 441409701444, 1288409915625, 3754926609800, 10927779696264]

cp's OEIS Frontend

A305132 Number of connected graphs on n unlabeled nodes with exactly 2 cycles joined along two or more edges but not more than half each cycle and all nodes having degree at most 4.

Table of values

List of values