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.

A048125 Becomes prime or 4 after exactly 3 iterations of f(x) = sum of prime factors of x.

Table of values

n a(n)
1 14
2 15
3 16
4 18
5 20
6 24
7 27
8 38
9 46
10 68
11 87
12 124
13 141
14 152
15 155
16 158
17 161
18 166
19 171
20 183
21 185
22 186
23 195
24 203
25 208
26 209
27 212
28 218
29 221
30 222
31 226
32 230
33 231
34 232
35 234
36 247
37 249
38 255
39 261
40 272
41 275
42 276
43 290
44 295
45 299
46 301
47 306
48 314
49 322
50 323
51 330
52 335
53 341
54 343

List of values

[14, 15, 16, 18, 20, 24, 27, 38, 46, 68, 87, 124, 141, 152, 155, 158, 161, 166, 171, 183, 185, 186, 195, 203, 208, 209, 212, 218, 221, 222, 226, 230, 231, 232, 234, 247, 249, 255, 261, 272, 275, 276, 290, 295, 299, 301, 306, 314, 322, 323, 330, 335, 341, 343]