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.

A326439 Number of maximal subsets of {1..n} such that no two elements have the same sorted prime signature.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 2
5 3
6 3
7 4
8 4
9 8
10 16
11 20
12 20
13 24
14 36
15 48
16 48
17 56
18 112
19 128
20 192
21 240
22 288
23 324
24 324
25 486
26 567
27 1134
28 1512
29 1680
30 1680
31 1848
32 1848
33 2112
34 2376
35 2640
36 2640
37 2880
38 3168
39 3456
40 6912
41 7488
42 14976
43 16128
44 20160
45 24192
46 26208
47 28080
48 28080
49 37440
50 43680

List of values

[1, 1, 1, 2, 2, 3, 3, 4, 4, 8, 16, 20, 20, 24, 36, 48, 48, 56, 112, 128, 192, 240, 288, 324, 324, 486, 567, 1134, 1512, 1680, 1680, 1848, 1848, 2112, 2376, 2640, 2640, 2880, 3168, 3456, 6912, 7488, 14976, 16128, 20160, 24192, 26208, 28080, 28080, 37440, 43680]