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.

A187108 Odd numbers not in the trajectory of a smaller number under the Collatz (3x+1) iteration.

Table of values

n a(n)
1 1
2 3
3 7
4 9
5 15
6 19
7 21
8 25
9 27
10 33
11 37
12 39
13 43
14 45
15 51
16 55
17 57
18 63
19 69
20 73
21 75
22 79
23 81
24 87
25 93
26 97
27 99
28 105
29 109
30 111
31 115
32 117
33 123
34 127
35 129
36 133
37 135
38 141
39 145
40 147
41 151
42 153
43 159
44 163
45 165
46 169
47 171
48 177
49 181
50 183
51 187
52 189
53 195
54 199
55 201
56 207
57 213
58 217

List of values

[1, 3, 7, 9, 15, 19, 21, 25, 27, 33, 37, 39, 43, 45, 51, 55, 57, 63, 69, 73, 75, 79, 81, 87, 93, 97, 99, 105, 109, 111, 115, 117, 123, 127, 129, 133, 135, 141, 145, 147, 151, 153, 159, 163, 165, 169, 171, 177, 181, 183, 187, 189, 195, 199, 201, 207, 213, 217]