A112956 - cp's OEIS frontend

A112956 a(n) = number of ways the set {1,2,...,n} can be split into proper subsets with equal sums.

n	a(n)
1	0
2	0
3	1
4	1
5	1
6	1
7	5
8	11
9	10
10	1
11	79
12	165
13	1
14	664
15	2917
16	3308
17	9295
18	23729
19	31874
20	301029
21	422896
22	1
23	13716866
24	71504979
25	100664384
26	54148590
27	880696661
28	498017758
29	27450476786
30	111911522818
31	179459955553
32	2144502175213
33	59115423982
34	45837019664551

[0, 0, 1, 1, 1, 1, 5, 11, 10, 1, 79, 165, 1, 664, 2917, 3308, 9295, 23729, 31874, 301029, 422896, 1, 13716866, 71504979, 100664384, 54148590, 880696661, 498017758, 27450476786, 111911522818, 179459955553, 2144502175213, 59115423982, 45837019664551]

cp's OEIS Frontend

A112956 a(n) = number of ways the set {1,2,...,n} can be split into proper subsets with equal sums.

Table of values

List of values