cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A369853 a(n) = number of subsets of {1,2,...,n} that contain more nonprimes than primes.

Table of values

n a(n)
0 0
1 1
2 1
3 1
4 5
5 6
6 22
7 29
8 93
9 256
10 638
11 1024
12 2510
13 4096
14 9908
15 22819
16 50643
17 89846
18 199140
19 354522
20 784626
21 1695222
22 3593934
23 6690448
24 14198086
25 29703676
26 61450327
27 126025204
28 256737233
29 500351356
30 1020732722
31 1986838144
32 4058348603
33 8245721686
34 16684980092

List of values

[0, 1, 1, 1, 5, 6, 22, 29, 93, 256, 638, 1024, 2510, 4096, 9908, 22819, 50643, 89846, 199140, 354522, 784626, 1695222, 3593934, 6690448, 14198086, 29703676, 61450327, 126025204, 256737233, 500351356, 1020732722, 1986838144, 4058348603, 8245721686, 16684980092]