A098622 - cp's OEIS frontend

A098622 Consider the family of directed multigraphs enriched by the species of set partitions. Sequence gives number of those multigraphs with n labeled loops and arcs.

n	a(n)
0	1
1	2
2	17
3	250
4	5465
5	162677
6	6241059
7	297132409
8	17075153860
9	1159545515804
10	91501467848088
11	8276847825732141
12	848577193578286942
13	97672164219292005480
14	12518933902769241287267
15	1774279753092963892540493
16	276351502436571180980604240
17	47046745370508674770872396843

[1, 2, 17, 250, 5465, 162677, 6241059, 297132409, 17075153860, 1159545515804, 91501467848088, 8276847825732141, 848577193578286942, 97672164219292005480, 12518933902769241287267, 1774279753092963892540493, 276351502436571180980604240, 47046745370508674770872396843]

cp's OEIS Frontend

A098622 Consider the family of directed multigraphs enriched by the species of set partitions. Sequence gives number of those multigraphs with n labeled loops and arcs.

Table of values

List of values