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.

A050778 Primes that are ending primes after the iterated procedure of 'composite added to the sum of its prime factors reaches a prime'.

Table of values

n a(n)
1 11
2 17
3 19
4 23
5 29
6 31
7 41
8 47
9 53
10 59
11 71
12 79
13 83
14 89
15 103
16 107
17 109
18 113
19 127
20 131
21 149
22 151
23 167
24 179
25 191
26 227
27 229
28 239
29 241
30 251
31 263
32 269
33 271
34 293
35 311
36 313
37 317
38 331
39 337
40 359
41 373
42 383
43 401
44 419
45 431
46 439
47 443
48 449
49 461
50 467
51 479
52 491
53 503
54 509
55 521

List of values

[11, 17, 19, 23, 29, 31, 41, 47, 53, 59, 71, 79, 83, 89, 103, 107, 109, 113, 127, 131, 149, 151, 167, 179, 191, 227, 229, 239, 241, 251, 263, 269, 271, 293, 311, 313, 317, 331, 337, 359, 373, 383, 401, 419, 431, 439, 443, 449, 461, 467, 479, 491, 503, 509, 521]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.