A357214 - cp's OEIS frontend

A357214 a(n) = number of subsets S of {1, 2, ..., n} such that every number in S is a composite.

n	a(n)
1	1
2	1
3	1
4	2
5	2
6	4
7	4
8	8
9	16
10	32
11	32
12	64
13	64
14	128
15	256
16	512
17	512
18	1024
19	1024
20	2048
21	4096
22	8192
23	8192
24	16384
25	32768
26	65536
27	131072
28	262144
29	262144
30	524288
31	524288
32	1048576
33	2097152
34	4194304
35	8388608
36	16777216
37	16777216
38	33554432
39	67108864
40	134217728
41	134217728

[1, 1, 1, 2, 2, 4, 4, 8, 16, 32, 32, 64, 64, 128, 256, 512, 512, 1024, 1024, 2048, 4096, 8192, 8192, 16384, 32768, 65536, 131072, 262144, 262144, 524288, 524288, 1048576, 2097152, 4194304, 8388608, 16777216, 16777216, 33554432, 67108864, 134217728, 134217728]

cp's OEIS Frontend

A357214 a(n) = number of subsets S of {1, 2, ..., n} such that every number in S is a composite.

Table of values

List of values