A168606 - cp's OEIS frontend

A168606 The number of ways of partitioning the multiset {1,1,1,2,3,...,n-2} into exactly four nonempty parts.

n	a(n)
4	1
5	4
6	20
7	102
8	496
9	2294
10	10200
11	44062
12	186416
13	776934
14	3203080
15	13101422
16	53279136
17	215749174
18	870919160
19	3507493182
20	14101520656
21	56620923014
22	227128606440
23	910449955342
24	3647607982976
25	14607859562454
26	58483727432920

[1, 4, 20, 102, 496, 2294, 10200, 44062, 186416, 776934, 3203080, 13101422, 53279136, 215749174, 870919160, 3507493182, 14101520656, 56620923014, 227128606440, 910449955342, 3647607982976, 14607859562454, 58483727432920]

cp's OEIS Frontend

A168606 The number of ways of partitioning the multiset {1,1,1,2,3,...,n-2} into exactly four nonempty parts.

Table of values

List of values