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.

A178590 a(2n) = 3*a(n), a(2n+1) = a(n) + a(n+1).

Table of values

n a(n)
1 1
2 3
3 4
4 9
5 7
6 12
7 13
8 27
9 16
10 21
11 19
12 36
13 25
14 39
15 40
16 81
17 43
18 48
19 37
20 63
21 40
22 57
23 55
24 108
25 61
26 75
27 64
28 117
29 79
30 120
31 121
32 243
33 124
34 129
35 91
36 144
37 85
38 111
39 100
40 189
41 103
42 120
43 97
44 171
45 112
46 165
47 163
48 324
49 169
50 183
51 136
52 225
53 139
54 192
55 181
56 351
57 196
58 237
59 199
60 360
61 241

List of values

[1, 3, 4, 9, 7, 12, 13, 27, 16, 21, 19, 36, 25, 39, 40, 81, 43, 48, 37, 63, 40, 57, 55, 108, 61, 75, 64, 117, 79, 120, 121, 243, 124, 129, 91, 144, 85, 111, 100, 189, 103, 120, 97, 171, 112, 165, 163, 324, 169, 183, 136, 225, 139, 192, 181, 351, 196, 237, 199, 360, 241]