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.

A050080 a(n) = floor(a(n-1)/3) if this is not among 0, a(1), ..., a(n-2); otherwise a(n) = 4*a(n-1).

Table of values

n a(n)
1 1
2 4
3 16
4 5
5 20
6 6
7 2
8 8
9 32
10 10
11 3
12 12
13 48
14 192
15 64
16 21
17 7
18 28
19 9
20 36
21 144
22 576
23 2304
24 768
25 256
26 85
27 340
28 113
29 37
30 148
31 49
32 196
33 65
34 260
35 86
36 344
37 114
38 38
39 152
40 50
41 200
42 66
43 22
44 88
45 29
46 116
47 464
48 154
49 51
50 17
51 68
52 272
53 90
54 30
55 120
56 40
57 13

List of values

[1, 4, 16, 5, 20, 6, 2, 8, 32, 10, 3, 12, 48, 192, 64, 21, 7, 28, 9, 36, 144, 576, 2304, 768, 256, 85, 340, 113, 37, 148, 49, 196, 65, 260, 86, 344, 114, 38, 152, 50, 200, 66, 22, 88, 29, 116, 464, 154, 51, 17, 68, 272, 90, 30, 120, 40, 13]