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.

A308546 Number of double-closed subsets of {1..n}.

Table of values

n a(n)
0 1
1 2
2 3
3 6
4 8
5 16
6 24
7 48
8 60
9 120
10 180
11 360
12 480
13 960
14 1440
15 2880
16 3456
17 6912
18 10368
19 20736
20 27648
21 55296
22 82944
23 165888
24 207360
25 414720
26 622080
27 1244160
28 1658880
29 3317760
30 4976640
31 9953280
32 11612160
33 23224320
34 34836480
35 69672960
36 92897280

List of values

[1, 2, 3, 6, 8, 16, 24, 48, 60, 120, 180, 360, 480, 960, 1440, 2880, 3456, 6912, 10368, 20736, 27648, 55296, 82944, 165888, 207360, 414720, 622080, 1244160, 1658880, 3317760, 4976640, 9953280, 11612160, 23224320, 34836480, 69672960, 92897280]