A374329 - cp's OEIS frontend

A374329 Number of partitions of [n] such that the number of blocks of size k is a multiple or a divisor of k for every k.

n	a(n)
0	1
1	1
2	2
3	5
4	15
5	52
6	178
7	702
8	3160
9	15267
10	72904
11	401139
12	2473320
13	15932022
14	99025826
15	641593206
16	4570555035
17	35589342752
18	281312386194
19	2198910615580
20	17652574088975
21	154057648160882
22	1437155645037380
23	13320654235409156
24	121511456568711443
25	1135554227462348853

[1, 1, 2, 5, 15, 52, 178, 702, 3160, 15267, 72904, 401139, 2473320, 15932022, 99025826, 641593206, 4570555035, 35589342752, 281312386194, 2198910615580, 17652574088975, 154057648160882, 1437155645037380, 13320654235409156, 121511456568711443, 1135554227462348853]

cp's OEIS Frontend

A374329 Number of partitions of [n] such that the number of blocks of size k is a multiple or a divisor of k for every k.

Table of values

List of values