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.

A050707 Composites c that reach a prime after 3 iterations of c -> c + sum of prime factors of c.

Table of values

n a(n)
1 4
2 16
3 27
4 28
5 30
6 42
7 76
8 87
9 92
10 95
11 108
12 114
13 120
14 124
15 128
16 133
17 136
18 147
19 148
20 154
21 172
22 196
23 202
24 204
25 216
26 222
27 238
28 242
29 243
30 244
31 245
32 255
33 256
34 260
35 285
36 286
37 292
38 308
39 310
40 325
41 338
42 340
43 342
44 350
45 386
46 412
47 418
48 422
49 423
50 426
51 435
52 440
53 458
54 464

List of values

[4, 16, 27, 28, 30, 42, 76, 87, 92, 95, 108, 114, 120, 124, 128, 133, 136, 147, 148, 154, 172, 196, 202, 204, 216, 222, 238, 242, 243, 244, 245, 255, 256, 260, 285, 286, 292, 308, 310, 325, 338, 340, 342, 350, 386, 412, 418, 422, 423, 426, 435, 440, 458, 464]