A098620 - cp's OEIS frontend

A098620 Consider the family of multigraphs enriched by the species of set partitions. Sequence gives number of those multigraphs with n labeled edges.

n	a(n)
0	1
1	1
2	4
3	26
4	257
5	3586
6	66207
7	1540693
8	43659615
9	1469677309
10	57681784820
11	2601121752854
12	133170904684965
13	7664254746784243
14	491679121677763607
15	34905596059311761907
16	2725010800987216480527
17	232643959843709167832482
18	21613761720729431904201734

[1, 1, 4, 26, 257, 3586, 66207, 1540693, 43659615, 1469677309, 57681784820, 2601121752854, 133170904684965, 7664254746784243, 491679121677763607, 34905596059311761907, 2725010800987216480527, 232643959843709167832482, 21613761720729431904201734]

cp's OEIS Frontend

A098620 Consider the family of multigraphs enriched by the species of set partitions. Sequence gives number of those multigraphs with n labeled edges.

Table of values

List of values