A243243 - cp's OEIS frontend

A243243 Number of unlabeled, connected graphs on n vertices with at least one subgraph isomorphic to a C_4, where C_4 is the cycle graph on four vertices.

n	a(n)
1	0
2	0
3	0
4	3
5	13
6	93
7	796
8	10931
9	260340
10	11713182
11	1006682063
12	164059710255
13	50335906936959
14	29003487454251217
15	31397381142667479256
16	63969560113223974443840
17	245871831682084008526845525
18	1787331725248899088577102145274
19	24636021429399867655316345340289103

[0, 0, 0, 3, 13, 93, 796, 10931, 260340, 11713182, 1006682063, 164059710255, 50335906936959, 29003487454251217, 31397381142667479256, 63969560113223974443840, 245871831682084008526845525, 1787331725248899088577102145274, 24636021429399867655316345340289103]

cp's OEIS Frontend

A243243 Number of unlabeled, connected graphs on n vertices with at least one subgraph isomorphic to a C_4, where C_4 is the cycle graph on four vertices.

Table of values

List of values