A337717 - cp's OEIS frontend

A337717 Number of connected graphs, where vertices are labeled with positive integers summing to n, and where identically labeled vertices are indistinguishable and cannot be connected with an edge.

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	6
6	12
7	28
8	65
9	173
10	496
11	1527
12	5092
13	18669
14	74601
15	325206
16	1572191
17	8487232
18	50962240
19	343162568
20	2627538015
21	22853622935
22	225118360626
23	2539559186827
24	33036542404276
25	491977100299885
26	8394837931641837

[1, 1, 1, 2, 3, 6, 12, 28, 65, 173, 496, 1527, 5092, 18669, 74601, 325206, 1572191, 8487232, 50962240, 343162568, 2627538015, 22853622935, 225118360626, 2539559186827, 33036542404276, 491977100299885, 8394837931641837]

cp's OEIS Frontend

A337717 Number of connected graphs, where vertices are labeled with positive integers summing to n, and where identically labeled vertices are indistinguishable and cannot be connected with an edge.

Table of values

List of values