A226773 - cp's OEIS frontend

A226773 Number of ways to select a simple labeled graph on n nodes and then select a subset of its connected components.

n	a(n)
0	1
1	2
2	6
3	28
4	216
5	3008
6	82944
7	4774912
8	575299584
9	142633336832
10	71796623671296
11	72847596766363648
12	148448195686743146496
13	606392780411924463484928
14	4960249711027691772375465984
15	81204042297885177526853243502592
16	2659755256932431408054237587983826944

[1, 2, 6, 28, 216, 3008, 82944, 4774912, 575299584, 142633336832, 71796623671296, 72847596766363648, 148448195686743146496, 606392780411924463484928, 4960249711027691772375465984, 81204042297885177526853243502592, 2659755256932431408054237587983826944]

cp's OEIS Frontend

A226773 Number of ways to select a simple labeled graph on n nodes and then select a subset of its connected components.

Table of values

List of values