A089819 - cp's OEIS frontend

A089819 Number of subsets of {1,2,...,n} containing no primes.

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

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

cp's OEIS Frontend

A089819 Number of subsets of {1,2,...,n} containing no primes.

Table of values

List of values