A168584 - cp's OEIS frontend

A168584 Number of ways of partitioning the multiset {1,1,2,3,...,n-1} into exactly four nonempty parts.

n	a(n)
4	1
5	7
6	41
7	215
8	1041
9	4767
10	21001
11	90055
12	378881
13	1572527
14	6463161
15	26375895
16	107081521
17	433076287
18	1746588521
19	7029269735
20	28245956961
21	113370724047
22	454644109081
23	1822061123575
24	7298700653201
25	29226175283807

[1, 7, 41, 215, 1041, 4767, 21001, 90055, 378881, 1572527, 6463161, 26375895, 107081521, 433076287, 1746588521, 7029269735, 28245956961, 113370724047, 454644109081, 1822061123575, 7298700653201, 29226175283807]

cp's OEIS Frontend

A168584 Number of ways of partitioning the multiset {1,1,2,3,...,n-1} into exactly four nonempty parts.

Table of values

List of values