A355746 - cp's OEIS frontend

A355746 Number of different multisets that can be obtained by choosing a prime index (or a prime factor) of each integer from 2 to n.

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	2
7	2
8	2
9	2
10	4
11	4
12	6
13	6
14	12
15	20
16	20
17	20
18	26
19	26
20	36
21	58
22	116
23	116
24	140
25	140
26	280
27	280
28	384
29	384
30	536
31	536
32	536
33	844
34	1688
35	2380
36	2716
37	2716
38	5432
39	8484
40	10152
41	10152
42	13308
43	13308
44	18064
45	21616
46	43232
47	43232
48	47648
49	47648
50	54656
51	84480
52	114304
53	114304

[1, 1, 1, 1, 1, 2, 2, 2, 2, 4, 4, 6, 6, 12, 20, 20, 20, 26, 26, 36, 58, 116, 116, 140, 140, 280, 280, 384, 384, 536, 536, 536, 844, 1688, 2380, 2716, 2716, 5432, 8484, 10152, 10152, 13308, 13308, 18064, 21616, 43232, 43232, 47648, 47648, 54656, 84480, 114304, 114304]

cp's OEIS Frontend

A355746 Number of different multisets that can be obtained by choosing a prime index (or a prime factor) of each integer from 2 to n.

Table of values

List of values