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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.

A142351 Primes of the form k/(3*(c(k)-r(k))), where c(k) = k-th composite and r(k) = k-th nonprime.

Table of values

n a(n)
1 3
2 13
3 11
4 17
5 29
6 31
7 23
8 41
9 43
10 53
11 61
12 41
13 43
14 67
15 47
16 71
17 73
18 79
19 83
20 67
21 101
22 107
23 109
24 113
25 79
26 137
27 139
28 97
29 149
30 101
31 157
32 107
33 167
34 173
35 179
36 127
37 191
38 193
39 197
40 199
41 139
42 211
43 223
44 151
45 227
46 229
47 241
48 167
49 251
50 179
51 269
52 271
53 277
54 281
55 283
56 307
57 311
58 317

List of values

[3, 13, 11, 17, 29, 31, 23, 41, 43, 53, 61, 41, 43, 67, 47, 71, 73, 79, 83, 67, 101, 107, 109, 113, 79, 137, 139, 97, 149, 101, 157, 107, 167, 173, 179, 127, 191, 193, 197, 199, 139, 211, 223, 151, 227, 229, 241, 167, 251, 179, 269, 271, 277, 281, 283, 307, 311, 317]

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

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